1424 lines
44 KiB
Python
1424 lines
44 KiB
Python
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#!/usr/bin/env python
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#
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# Copyright (c) 2005 Niels Provos <provos@citi.umich.edu>
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# All rights reserved.
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#
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# Generates marshaling code based on libevent.
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import sys
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import re
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#
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_NAME = "event_rpcgen.py"
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_VERSION = "0.1"
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_STRUCT_RE = '[a-z][a-z_0-9]*'
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# Globals
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line_count = 0
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white = re.compile(r'^\s+')
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cppcomment = re.compile(r'\/\/.*$')
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headerdirect = []
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cppdirect = []
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# Holds everything that makes a struct
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class Struct:
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def __init__(self, name):
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self._name = name
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self._entries = []
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self._tags = {}
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print >>sys.stderr, ' Created struct: %s' % name
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def AddEntry(self, entry):
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if self._tags.has_key(entry.Tag()):
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print >>sys.stderr, ( 'Entry "%s" duplicates tag number '
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'%d from "%s" around line %d' ) % (
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entry.Name(), entry.Tag(),
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self._tags[entry.Tag()], line_count)
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sys.exit(1)
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self._entries.append(entry)
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self._tags[entry.Tag()] = entry.Name()
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print >>sys.stderr, ' Added entry: %s' % entry.Name()
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def Name(self):
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return self._name
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def EntryTagName(self, entry):
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"""Creates the name inside an enumeration for distinguishing data
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types."""
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name = "%s_%s" % (self._name, entry.Name())
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return name.upper()
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def PrintIdented(self, file, ident, code):
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"""Takes an array, add indentation to each entry and prints it."""
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for entry in code:
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print >>file, '%s%s' % (ident, entry)
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def PrintTags(self, file):
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"""Prints the tag definitions for a structure."""
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print >>file, '/* Tag definition for %s */' % self._name
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print >>file, 'enum %s_ {' % self._name.lower()
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for entry in self._entries:
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print >>file, ' %s=%d,' % (self.EntryTagName(entry),
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entry.Tag())
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print >>file, ' %s_MAX_TAGS' % (self._name.upper())
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print >>file, '};\n'
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def PrintForwardDeclaration(self, file):
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print >>file, 'struct %s;' % self._name
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def PrintDeclaration(self, file):
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print >>file, '/* Structure declaration for %s */' % self._name
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print >>file, 'struct %s_access_ {' % self._name
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for entry in self._entries:
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dcl = entry.AssignDeclaration('(*%s_assign)' % entry.Name())
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dcl.extend(
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entry.GetDeclaration('(*%s_get)' % entry.Name()))
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if entry.Array():
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dcl.extend(
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entry.AddDeclaration('(*%s_add)' % entry.Name()))
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self.PrintIdented(file, ' ', dcl)
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print >>file, '};\n'
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print >>file, 'struct %s {' % self._name
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print >>file, ' struct %s_access_ *base;\n' % self._name
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for entry in self._entries:
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dcl = entry.Declaration()
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self.PrintIdented(file, ' ', dcl)
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print >>file, ''
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for entry in self._entries:
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print >>file, ' ev_uint8_t %s_set;' % entry.Name()
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print >>file, '};\n'
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print >>file, \
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"""struct %(name)s *%(name)s_new(void);
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void %(name)s_free(struct %(name)s *);
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void %(name)s_clear(struct %(name)s *);
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void %(name)s_marshal(struct evbuffer *, const struct %(name)s *);
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int %(name)s_unmarshal(struct %(name)s *, struct evbuffer *);
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int %(name)s_complete(struct %(name)s *);
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void evtag_marshal_%(name)s(struct evbuffer *, ev_uint32_t,
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const struct %(name)s *);
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int evtag_unmarshal_%(name)s(struct evbuffer *, ev_uint32_t,
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struct %(name)s *);""" % { 'name' : self._name }
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# Write a setting function of every variable
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for entry in self._entries:
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self.PrintIdented(file, '', entry.AssignDeclaration(
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entry.AssignFuncName()))
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self.PrintIdented(file, '', entry.GetDeclaration(
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entry.GetFuncName()))
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if entry.Array():
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self.PrintIdented(file, '', entry.AddDeclaration(
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entry.AddFuncName()))
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print >>file, '/* --- %s done --- */\n' % self._name
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def PrintCode(self, file):
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print >>file, ('/*\n'
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' * Implementation of %s\n'
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' */\n') % self._name
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print >>file, \
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'static struct %(name)s_access_ __%(name)s_base = {' % \
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{ 'name' : self._name }
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for entry in self._entries:
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self.PrintIdented(file, ' ', entry.CodeBase())
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print >>file, '};\n'
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# Creation
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print >>file, (
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'struct %(name)s *\n'
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'%(name)s_new(void)\n'
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'{\n'
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' struct %(name)s *tmp;\n'
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' if ((tmp = malloc(sizeof(struct %(name)s))) == NULL) {\n'
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' event_warn("%%s: malloc", __func__);\n'
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' return (NULL);\n'
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' }\n'
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' tmp->base = &__%(name)s_base;\n') % { 'name' : self._name }
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for entry in self._entries:
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self.PrintIdented(file, ' ', entry.CodeNew('tmp'))
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print >>file, ' tmp->%s_set = 0;\n' % entry.Name()
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print >>file, (
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' return (tmp);\n'
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'}\n')
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# Adding
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for entry in self._entries:
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if entry.Array():
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self.PrintIdented(file, '', entry.CodeAdd())
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print >>file, ''
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# Assigning
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for entry in self._entries:
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self.PrintIdented(file, '', entry.CodeAssign())
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print >>file, ''
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# Getting
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for entry in self._entries:
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self.PrintIdented(file, '', entry.CodeGet())
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print >>file, ''
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# Clearing
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print >>file, ( 'void\n'
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'%(name)s_clear(struct %(name)s *tmp)\n'
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'{'
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) % { 'name' : self._name }
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for entry in self._entries:
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self.PrintIdented(file, ' ', entry.CodeClear('tmp'))
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print >>file, '}\n'
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# Freeing
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print >>file, ( 'void\n'
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'%(name)s_free(struct %(name)s *tmp)\n'
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'{'
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) % { 'name' : self._name }
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for entry in self._entries:
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self.PrintIdented(file, ' ', entry.CodeFree('tmp'))
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print >>file, (' free(tmp);\n'
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'}\n')
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# Marshaling
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print >>file, ('void\n'
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'%(name)s_marshal(struct evbuffer *evbuf, '
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'const struct %(name)s *tmp)'
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'{') % { 'name' : self._name }
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for entry in self._entries:
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indent = ' '
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# Optional entries do not have to be set
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if entry.Optional():
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indent += ' '
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print >>file, ' if (tmp->%s_set) {' % entry.Name()
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self.PrintIdented(
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file, indent,
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entry.CodeMarshal('evbuf', self.EntryTagName(entry), 'tmp'))
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if entry.Optional():
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print >>file, ' }'
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print >>file, '}\n'
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# Unmarshaling
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print >>file, ('int\n'
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'%(name)s_unmarshal(struct %(name)s *tmp, '
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' struct evbuffer *evbuf)\n'
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'{\n'
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' ev_uint32_t tag;\n'
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' while (EVBUFFER_LENGTH(evbuf) > 0) {\n'
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' if (evtag_peek(evbuf, &tag) == -1)\n'
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' return (-1);\n'
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' switch (tag) {\n'
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) % { 'name' : self._name }
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for entry in self._entries:
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print >>file, ' case %s:\n' % self.EntryTagName(entry)
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if not entry.Array():
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print >>file, (
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' if (tmp->%s_set)\n'
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' return (-1);'
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) % (entry.Name())
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self.PrintIdented(
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file, ' ',
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entry.CodeUnmarshal('evbuf',
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self.EntryTagName(entry), 'tmp'))
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print >>file, ( ' tmp->%s_set = 1;\n' % entry.Name() +
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' break;\n' )
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print >>file, ( ' default:\n'
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' return -1;\n'
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' }\n'
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' }\n' )
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# Check if it was decoded completely
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print >>file, ( ' if (%(name)s_complete(tmp) == -1)\n'
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' return (-1);'
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) % { 'name' : self._name }
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# Successfully decoded
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print >>file, ( ' return (0);\n'
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'}\n')
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# Checking if a structure has all the required data
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print >>file, (
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'int\n'
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'%(name)s_complete(struct %(name)s *msg)\n'
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'{' ) % { 'name' : self._name }
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for entry in self._entries:
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self.PrintIdented(
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file, ' ',
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entry.CodeComplete('msg'))
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print >>file, (
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' return (0);\n'
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'}\n' )
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# Complete message unmarshaling
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print >>file, (
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'int\n'
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'evtag_unmarshal_%(name)s(struct evbuffer *evbuf, '
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'ev_uint32_t need_tag, struct %(name)s *msg)\n'
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'{\n'
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' ev_uint32_t tag;\n'
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' int res = -1;\n'
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'\n'
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' struct evbuffer *tmp = evbuffer_new();\n'
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'\n'
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' if (evtag_unmarshal(evbuf, &tag, tmp) == -1'
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' || tag != need_tag)\n'
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' goto error;\n'
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'\n'
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' if (%(name)s_unmarshal(msg, tmp) == -1)\n'
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' goto error;\n'
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'\n'
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' res = 0;\n'
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'\n'
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' error:\n'
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' evbuffer_free(tmp);\n'
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' return (res);\n'
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'}\n' ) % { 'name' : self._name }
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# Complete message marshaling
|
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print >>file, (
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'void\n'
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'evtag_marshal_%(name)s(struct evbuffer *evbuf, ev_uint32_t tag, '
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'const struct %(name)s *msg)\n'
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'{\n'
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' struct evbuffer *_buf = evbuffer_new();\n'
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' assert(_buf != NULL);\n'
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' evbuffer_drain(_buf, -1);\n'
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' %(name)s_marshal(_buf, msg);\n'
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' evtag_marshal(evbuf, tag, EVBUFFER_DATA(_buf), '
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'EVBUFFER_LENGTH(_buf));\n'
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' evbuffer_free(_buf);\n'
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'}\n' ) % { 'name' : self._name }
|
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|
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class Entry:
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def __init__(self, type, name, tag):
|
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self._type = type
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self._name = name
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self._tag = int(tag)
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|
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self._ctype = type
|
||
|
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self._optional = 0
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||
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self._can_be_array = 0
|
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self._array = 0
|
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self._line_count = -1
|
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self._struct = None
|
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|
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self._refname = None
|
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|
|
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||
|
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def GetTranslation(self):
|
||
|
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return { "parent_name" : self._struct.Name(),
|
||
|
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"name" : self._name,
|
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"ctype" : self._ctype,
|
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"refname" : self._refname
|
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}
|
||
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||
|
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def SetStruct(self, struct):
|
||
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self._struct = struct
|
||
|
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||
|
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def LineCount(self):
|
||
|
|
assert self._line_count != -1
|
||
|
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return self._line_count
|
||
|
|
|
||
|
|
def SetLineCount(self, number):
|
||
|
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self._line_count = number
|
||
|
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||
|
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def Array(self):
|
||
|
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return self._array
|
||
|
|
|
||
|
|
def Optional(self):
|
||
|
|
return self._optional
|
||
|
|
|
||
|
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def Tag(self):
|
||
|
|
return self._tag
|
||
|
|
|
||
|
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def Name(self):
|
||
|
|
return self._name
|
||
|
|
|
||
|
|
def Type(self):
|
||
|
|
return self._type
|
||
|
|
|
||
|
|
def MakeArray(self, yes=1):
|
||
|
|
self._array = yes
|
||
|
|
|
||
|
|
def MakeOptional(self):
|
||
|
|
self._optional = 1
|
||
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|
||
|
|
def GetFuncName(self):
|
||
|
|
return '%s_%s_get' % (self._struct.Name(), self._name)
|
||
|
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|
||
|
|
def GetDeclaration(self, funcname):
|
||
|
|
code = [ 'int %s(struct %s *, %s *);' % (
|
||
|
|
funcname, self._struct.Name(), self._ctype ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeGet(self):
|
||
|
|
code = (
|
||
|
|
'int',
|
||
|
|
'%(parent_name)s_%(name)s_get(struct %(parent_name)s *msg, '
|
||
|
|
'%(ctype)s *value)',
|
||
|
|
'{',
|
||
|
|
' if (msg->%(name)s_set != 1)',
|
||
|
|
' return (-1);',
|
||
|
|
' *value = msg->%(name)s_data;',
|
||
|
|
' return (0);',
|
||
|
|
'}' )
|
||
|
|
code = '\n'.join(code)
|
||
|
|
code = code % self.GetTranslation()
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def AssignFuncName(self):
|
||
|
|
return '%s_%s_assign' % (self._struct.Name(), self._name)
|
||
|
|
|
||
|
|
def AddFuncName(self):
|
||
|
|
return '%s_%s_add' % (self._struct.Name(), self._name)
|
||
|
|
|
||
|
|
def AssignDeclaration(self, funcname):
|
||
|
|
code = [ 'int %s(struct %s *, const %s);' % (
|
||
|
|
funcname, self._struct.Name(), self._ctype ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeAssign(self):
|
||
|
|
code = [ 'int',
|
||
|
|
'%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg,'
|
||
|
|
' const %(ctype)s value)',
|
||
|
|
'{',
|
||
|
|
' msg->%(name)s_set = 1;',
|
||
|
|
' msg->%(name)s_data = value;',
|
||
|
|
' return (0);',
|
||
|
|
'}' ]
|
||
|
|
code = '\n'.join(code)
|
||
|
|
code = code % self.GetTranslation()
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def CodeClear(self, structname):
|
||
|
|
code = [ '%s->%s_set = 0;' % (structname, self.Name()) ]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeComplete(self, structname):
|
||
|
|
if self.Optional():
|
||
|
|
return []
|
||
|
|
|
||
|
|
code = [ 'if (!%s->%s_set)' % (structname, self.Name()),
|
||
|
|
' return (-1);' ]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeFree(self, name):
|
||
|
|
return []
|
||
|
|
|
||
|
|
def CodeBase(self):
|
||
|
|
code = [
|
||
|
|
'%(parent_name)s_%(name)s_assign,',
|
||
|
|
'%(parent_name)s_%(name)s_get,'
|
||
|
|
]
|
||
|
|
if self.Array():
|
||
|
|
code.append('%(parent_name)s_%(name)s_add,')
|
||
|
|
|
||
|
|
code = '\n'.join(code)
|
||
|
|
code = code % self.GetTranslation()
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def Verify(self):
|
||
|
|
if self.Array() and not self._can_be_array:
|
||
|
|
print >>sys.stderr, (
|
||
|
|
'Entry "%s" cannot be created as an array '
|
||
|
|
'around line %d' ) % (self._name, self.LineCount())
|
||
|
|
sys.exit(1)
|
||
|
|
if not self._struct:
|
||
|
|
print >>sys.stderr, (
|
||
|
|
'Entry "%s" does not know which struct it belongs to '
|
||
|
|
'around line %d' ) % (self._name, self.LineCount())
|
||
|
|
sys.exit(1)
|
||
|
|
if self._optional and self._array:
|
||
|
|
print >>sys.stderr, ( 'Entry "%s" has illegal combination of '
|
||
|
|
'optional and array around line %d' ) % (
|
||
|
|
self._name, self.LineCount() )
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
class EntryBytes(Entry):
|
||
|
|
def __init__(self, type, name, tag, length):
|
||
|
|
# Init base class
|
||
|
|
Entry.__init__(self, type, name, tag)
|
||
|
|
|
||
|
|
self._length = length
|
||
|
|
self._ctype = 'ev_uint8_t'
|
||
|
|
|
||
|
|
def GetDeclaration(self, funcname):
|
||
|
|
code = [ 'int %s(struct %s *, %s **);' % (
|
||
|
|
funcname, self._struct.Name(), self._ctype ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def AssignDeclaration(self, funcname):
|
||
|
|
code = [ 'int %s(struct %s *, const %s *);' % (
|
||
|
|
funcname, self._struct.Name(), self._ctype ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def Declaration(self):
|
||
|
|
dcl = ['ev_uint8_t %s_data[%s];' % (self._name, self._length)]
|
||
|
|
|
||
|
|
return dcl
|
||
|
|
|
||
|
|
def CodeGet(self):
|
||
|
|
name = self._name
|
||
|
|
code = [ 'int',
|
||
|
|
'%s_%s_get(struct %s *msg, %s **value)' % (
|
||
|
|
self._struct.Name(), name,
|
||
|
|
self._struct.Name(), self._ctype),
|
||
|
|
'{',
|
||
|
|
' if (msg->%s_set != 1)' % name,
|
||
|
|
' return (-1);',
|
||
|
|
' *value = msg->%s_data;' % name,
|
||
|
|
' return (0);',
|
||
|
|
'}' ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeAssign(self):
|
||
|
|
name = self._name
|
||
|
|
code = [ 'int',
|
||
|
|
'%s_%s_assign(struct %s *msg, const %s *value)' % (
|
||
|
|
self._struct.Name(), name,
|
||
|
|
self._struct.Name(), self._ctype),
|
||
|
|
'{',
|
||
|
|
' msg->%s_set = 1;' % name,
|
||
|
|
' memcpy(msg->%s_data, value, %s);' % (
|
||
|
|
name, self._length),
|
||
|
|
' return (0);',
|
||
|
|
'}' ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeUnmarshal(self, buf, tag_name, var_name):
|
||
|
|
code = [ 'if (evtag_unmarshal_fixed(%s, %s, ' % (buf, tag_name) +
|
||
|
|
'%s->%s_data, ' % (var_name, self._name) +
|
||
|
|
'sizeof(%s->%s_data)) == -1) {' % (
|
||
|
|
var_name, self._name),
|
||
|
|
' event_warnx("%%s: failed to unmarshal %s", __func__);' % (
|
||
|
|
self._name ),
|
||
|
|
' return (-1);',
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeMarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['evtag_marshal(%s, %s, %s->%s_data, sizeof(%s->%s_data));' % (
|
||
|
|
buf, tag_name, var_name, self._name, var_name, self._name )]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeClear(self, structname):
|
||
|
|
code = [ '%s->%s_set = 0;' % (structname, self.Name()),
|
||
|
|
'memset(%s->%s_data, 0, sizeof(%s->%s_data));' % (
|
||
|
|
structname, self._name, structname, self._name)]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeNew(self, name):
|
||
|
|
code = ['memset(%s->%s_data, 0, sizeof(%s->%s_data));' % (
|
||
|
|
name, self._name, name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def Verify(self):
|
||
|
|
if not self._length:
|
||
|
|
print >>sys.stderr, 'Entry "%s" needs a length around line %d' % (
|
||
|
|
self._name, self.LineCount() )
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
Entry.Verify(self)
|
||
|
|
|
||
|
|
class EntryInt(Entry):
|
||
|
|
def __init__(self, type, name, tag):
|
||
|
|
# Init base class
|
||
|
|
Entry.__init__(self, type, name, tag)
|
||
|
|
|
||
|
|
self._ctype = 'ev_uint32_t'
|
||
|
|
|
||
|
|
def CodeUnmarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['if (evtag_unmarshal_int(%s, %s, &%s->%s_data) == -1) {' % (
|
||
|
|
buf, tag_name, var_name, self._name),
|
||
|
|
' event_warnx("%%s: failed to unmarshal %s", __func__);' % (
|
||
|
|
self._name ),
|
||
|
|
' return (-1);',
|
||
|
|
'}' ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeMarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['evtag_marshal_int(%s, %s, %s->%s_data);' % (
|
||
|
|
buf, tag_name, var_name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def Declaration(self):
|
||
|
|
dcl = ['ev_uint32_t %s_data;' % self._name]
|
||
|
|
|
||
|
|
return dcl
|
||
|
|
|
||
|
|
def CodeNew(self, name):
|
||
|
|
code = ['%s->%s_data = 0;' % (name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
class EntryString(Entry):
|
||
|
|
def __init__(self, type, name, tag):
|
||
|
|
# Init base class
|
||
|
|
Entry.__init__(self, type, name, tag)
|
||
|
|
|
||
|
|
self._ctype = 'char *'
|
||
|
|
|
||
|
|
def CodeAssign(self):
|
||
|
|
name = self._name
|
||
|
|
code = """int
|
||
|
|
%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg,
|
||
|
|
const %(ctype)s value)
|
||
|
|
{
|
||
|
|
if (msg->%(name)s_data != NULL)
|
||
|
|
free(msg->%(name)s_data);
|
||
|
|
if ((msg->%(name)s_data = strdup(value)) == NULL)
|
||
|
|
return (-1);
|
||
|
|
msg->%(name)s_set = 1;
|
||
|
|
return (0);
|
||
|
|
}""" % self.GetTranslation()
|
||
|
|
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def CodeUnmarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['if (evtag_unmarshal_string(%s, %s, &%s->%s_data) == -1) {' % (
|
||
|
|
buf, tag_name, var_name, self._name),
|
||
|
|
' event_warnx("%%s: failed to unmarshal %s", __func__);' % (
|
||
|
|
self._name ),
|
||
|
|
' return (-1);',
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeMarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['evtag_marshal_string(%s, %s, %s->%s_data);' % (
|
||
|
|
buf, tag_name, var_name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeClear(self, structname):
|
||
|
|
code = [ 'if (%s->%s_set == 1) {' % (structname, self.Name()),
|
||
|
|
' free (%s->%s_data);' % (structname, self.Name()),
|
||
|
|
' %s->%s_data = NULL;' % (structname, self.Name()),
|
||
|
|
' %s->%s_set = 0;' % (structname, self.Name()),
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeNew(self, name):
|
||
|
|
code = ['%s->%s_data = NULL;' % (name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeFree(self, name):
|
||
|
|
code = ['if (%s->%s_data != NULL)' % (name, self._name),
|
||
|
|
' free (%s->%s_data); ' % (name, self._name)]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def Declaration(self):
|
||
|
|
dcl = ['char *%s_data;' % self._name]
|
||
|
|
|
||
|
|
return dcl
|
||
|
|
|
||
|
|
class EntryStruct(Entry):
|
||
|
|
def __init__(self, type, name, tag, refname):
|
||
|
|
# Init base class
|
||
|
|
Entry.__init__(self, type, name, tag)
|
||
|
|
|
||
|
|
self._can_be_array = 1
|
||
|
|
self._refname = refname
|
||
|
|
self._ctype = 'struct %s*' % refname
|
||
|
|
|
||
|
|
def CodeGet(self):
|
||
|
|
name = self._name
|
||
|
|
code = [ 'int',
|
||
|
|
'%s_%s_get(struct %s *msg, %s *value)' % (
|
||
|
|
self._struct.Name(), name,
|
||
|
|
self._struct.Name(), self._ctype),
|
||
|
|
'{',
|
||
|
|
' if (msg->%s_set != 1) {' % name,
|
||
|
|
' msg->%s_data = %s_new();' % (name, self._refname),
|
||
|
|
' if (msg->%s_data == NULL)' % name,
|
||
|
|
' return (-1);',
|
||
|
|
' msg->%s_set = 1;' % name,
|
||
|
|
' }',
|
||
|
|
' *value = msg->%s_data;' % name,
|
||
|
|
' return (0);',
|
||
|
|
'}' ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeAssign(self):
|
||
|
|
name = self._name
|
||
|
|
code = """int
|
||
|
|
%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg,
|
||
|
|
const %(ctype)s value)
|
||
|
|
{
|
||
|
|
struct evbuffer *tmp = NULL;
|
||
|
|
if (msg->%(name)s_set) {
|
||
|
|
%(refname)s_clear(msg->%(name)s_data);
|
||
|
|
msg->%(name)s_set = 0;
|
||
|
|
} else {
|
||
|
|
msg->%(name)s_data = %(refname)s_new();
|
||
|
|
if (msg->%(name)s_data == NULL) {
|
||
|
|
event_warn("%%s: %(refname)s_new()", __func__);
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ((tmp = evbuffer_new()) == NULL) {
|
||
|
|
event_warn("%%s: evbuffer_new()", __func__);
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
%(refname)s_marshal(tmp, value);
|
||
|
|
if (%(refname)s_unmarshal(msg->%(name)s_data, tmp) == -1) {
|
||
|
|
event_warnx("%%s: %(refname)s_unmarshal", __func__);
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
msg->%(name)s_set = 1;
|
||
|
|
evbuffer_free(tmp);
|
||
|
|
return (0);
|
||
|
|
error:
|
||
|
|
if (tmp != NULL)
|
||
|
|
evbuffer_free(tmp);
|
||
|
|
if (msg->%(name)s_data != NULL) {
|
||
|
|
%(refname)s_free(msg->%(name)s_data);
|
||
|
|
msg->%(name)s_data = NULL;
|
||
|
|
}
|
||
|
|
return (-1);
|
||
|
|
}""" % self.GetTranslation()
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def CodeComplete(self, structname):
|
||
|
|
if self.Optional():
|
||
|
|
code = [ 'if (%s->%s_set && %s_complete(%s->%s_data) == -1)' % (
|
||
|
|
structname, self.Name(),
|
||
|
|
self._refname, structname, self.Name()),
|
||
|
|
' return (-1);' ]
|
||
|
|
else:
|
||
|
|
code = [ 'if (%s_complete(%s->%s_data) == -1)' % (
|
||
|
|
self._refname, structname, self.Name()),
|
||
|
|
' return (-1);' ]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeUnmarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['%s->%s_data = %s_new();' % (
|
||
|
|
var_name, self._name, self._refname),
|
||
|
|
'if (%s->%s_data == NULL)' % (var_name, self._name),
|
||
|
|
' return (-1);',
|
||
|
|
'if (evtag_unmarshal_%s(%s, %s, %s->%s_data) == -1) {' % (
|
||
|
|
self._refname, buf, tag_name, var_name, self._name),
|
||
|
|
' event_warnx("%%s: failed to unmarshal %s", __func__);' % (
|
||
|
|
self._name ),
|
||
|
|
' return (-1);',
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeMarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['evtag_marshal_%s(%s, %s, %s->%s_data);' % (
|
||
|
|
self._refname, buf, tag_name, var_name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeClear(self, structname):
|
||
|
|
code = [ 'if (%s->%s_set == 1) {' % (structname, self.Name()),
|
||
|
|
' %s_free(%s->%s_data);' % (
|
||
|
|
self._refname, structname, self.Name()),
|
||
|
|
' %s->%s_data = NULL;' % (structname, self.Name()),
|
||
|
|
' %s->%s_set = 0;' % (structname, self.Name()),
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeNew(self, name):
|
||
|
|
code = ['%s->%s_data = NULL;' % (name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeFree(self, name):
|
||
|
|
code = ['if (%s->%s_data != NULL)' % (name, self._name),
|
||
|
|
' %s_free(%s->%s_data); ' % (
|
||
|
|
self._refname, name, self._name)]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def Declaration(self):
|
||
|
|
dcl = ['%s %s_data;' % (self._ctype, self._name)]
|
||
|
|
|
||
|
|
return dcl
|
||
|
|
|
||
|
|
class EntryVarBytes(Entry):
|
||
|
|
def __init__(self, type, name, tag):
|
||
|
|
# Init base class
|
||
|
|
Entry.__init__(self, type, name, tag)
|
||
|
|
|
||
|
|
self._ctype = 'ev_uint8_t *'
|
||
|
|
|
||
|
|
def GetDeclaration(self, funcname):
|
||
|
|
code = [ 'int %s(struct %s *, %s *, ev_uint32_t *);' % (
|
||
|
|
funcname, self._struct.Name(), self._ctype ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def AssignDeclaration(self, funcname):
|
||
|
|
code = [ 'int %s(struct %s *, const %s, ev_uint32_t);' % (
|
||
|
|
funcname, self._struct.Name(), self._ctype ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeAssign(self):
|
||
|
|
name = self._name
|
||
|
|
code = [ 'int',
|
||
|
|
'%s_%s_assign(struct %s *msg, '
|
||
|
|
'const %s value, ev_uint32_t len)' % (
|
||
|
|
self._struct.Name(), name,
|
||
|
|
self._struct.Name(), self._ctype),
|
||
|
|
'{',
|
||
|
|
' if (msg->%s_data != NULL)' % name,
|
||
|
|
' free (msg->%s_data);' % name,
|
||
|
|
' msg->%s_data = malloc(len);' % name,
|
||
|
|
' if (msg->%s_data == NULL)' % name,
|
||
|
|
' return (-1);',
|
||
|
|
' msg->%s_set = 1;' % name,
|
||
|
|
' msg->%s_length = len;' % name,
|
||
|
|
' memcpy(msg->%s_data, value, len);' % name,
|
||
|
|
' return (0);',
|
||
|
|
'}' ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeGet(self):
|
||
|
|
name = self._name
|
||
|
|
code = [ 'int',
|
||
|
|
'%s_%s_get(struct %s *msg, %s *value, ev_uint32_t *plen)' % (
|
||
|
|
self._struct.Name(), name,
|
||
|
|
self._struct.Name(), self._ctype),
|
||
|
|
'{',
|
||
|
|
' if (msg->%s_set != 1)' % name,
|
||
|
|
' return (-1);',
|
||
|
|
' *value = msg->%s_data;' % name,
|
||
|
|
' *plen = msg->%s_length;' % name,
|
||
|
|
' return (0);',
|
||
|
|
'}' ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeUnmarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['if (evtag_payload_length(%s, &%s->%s_length) == -1)' % (
|
||
|
|
buf, var_name, self._name),
|
||
|
|
' return (-1);',
|
||
|
|
# We do not want DoS opportunities
|
||
|
|
'if (%s->%s_length > EVBUFFER_LENGTH(%s))' % (
|
||
|
|
var_name, self._name, buf),
|
||
|
|
' return (-1);',
|
||
|
|
'if ((%s->%s_data = malloc(%s->%s_length)) == NULL)' % (
|
||
|
|
var_name, self._name, var_name, self._name),
|
||
|
|
' return (-1);',
|
||
|
|
'if (evtag_unmarshal_fixed(%s, %s, %s->%s_data, '
|
||
|
|
'%s->%s_length) == -1) {' % (
|
||
|
|
buf, tag_name, var_name, self._name, var_name, self._name),
|
||
|
|
' event_warnx("%%s: failed to unmarshal %s", __func__);' % (
|
||
|
|
self._name ),
|
||
|
|
' return (-1);',
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeMarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['evtag_marshal(%s, %s, %s->%s_data, %s->%s_length);' % (
|
||
|
|
buf, tag_name, var_name, self._name, var_name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeClear(self, structname):
|
||
|
|
code = [ 'if (%s->%s_set == 1) {' % (structname, self.Name()),
|
||
|
|
' free (%s->%s_data);' % (structname, self.Name()),
|
||
|
|
' %s->%s_data = NULL;' % (structname, self.Name()),
|
||
|
|
' %s->%s_length = 0;' % (structname, self.Name()),
|
||
|
|
' %s->%s_set = 0;' % (structname, self.Name()),
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeNew(self, name):
|
||
|
|
code = ['%s->%s_data = NULL;' % (name, self._name),
|
||
|
|
'%s->%s_length = 0;' % (name, self._name) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeFree(self, name):
|
||
|
|
code = ['if (%s->%s_data != NULL)' % (name, self._name),
|
||
|
|
' free (%s->%s_data); ' % (name, self._name)]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def Declaration(self):
|
||
|
|
dcl = ['ev_uint8_t *%s_data;' % self._name,
|
||
|
|
'ev_uint32_t %s_length;' % self._name]
|
||
|
|
|
||
|
|
return dcl
|
||
|
|
|
||
|
|
class EntryArray(Entry):
|
||
|
|
def __init__(self, entry):
|
||
|
|
# Init base class
|
||
|
|
Entry.__init__(self, entry._type, entry._name, entry._tag)
|
||
|
|
|
||
|
|
self._entry = entry
|
||
|
|
self._refname = entry._refname
|
||
|
|
self._ctype = 'struct %s *' % self._refname
|
||
|
|
|
||
|
|
def GetDeclaration(self, funcname):
|
||
|
|
"""Allows direct access to elements of the array."""
|
||
|
|
translate = self.GetTranslation()
|
||
|
|
translate["funcname"] = funcname
|
||
|
|
code = [
|
||
|
|
'int %(funcname)s(struct %(parent_name)s *, int, %(ctype)s *);' %
|
||
|
|
translate ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def AssignDeclaration(self, funcname):
|
||
|
|
code = [ 'int %s(struct %s *, int, const %s);' % (
|
||
|
|
funcname, self._struct.Name(), self._ctype ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def AddDeclaration(self, funcname):
|
||
|
|
code = [ '%s %s(struct %s *);' % (
|
||
|
|
self._ctype, funcname, self._struct.Name() ) ]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeGet(self):
|
||
|
|
code = """int
|
||
|
|
%(parent_name)s_%(name)s_get(struct %(parent_name)s *msg, int offset,
|
||
|
|
%(ctype)s *value)
|
||
|
|
{
|
||
|
|
if (!msg->%(name)s_set || offset < 0 || offset >= msg->%(name)s_length)
|
||
|
|
return (-1);
|
||
|
|
*value = msg->%(name)s_data[offset];
|
||
|
|
return (0);
|
||
|
|
}""" % self.GetTranslation()
|
||
|
|
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def CodeAssign(self):
|
||
|
|
code = """int
|
||
|
|
%(parent_name)s_%(name)s_assign(struct %(parent_name)s *msg, int off,
|
||
|
|
const %(ctype)s value)
|
||
|
|
{
|
||
|
|
struct evbuffer *tmp = NULL;
|
||
|
|
if (!msg->%(name)s_set || off < 0 || off >= msg->%(name)s_length)
|
||
|
|
return (-1);
|
||
|
|
%(refname)s_clear(msg->%(name)s_data[off]);
|
||
|
|
if ((tmp = evbuffer_new()) == NULL) {
|
||
|
|
event_warn("%%s: evbuffer_new()", __func__);
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
%(refname)s_marshal(tmp, value);
|
||
|
|
if (%(refname)s_unmarshal(msg->%(name)s_data[off], tmp) == -1) {
|
||
|
|
event_warnx("%%s: %(refname)s_unmarshal", __func__);
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
evbuffer_free(tmp);
|
||
|
|
return (0);
|
||
|
|
error:
|
||
|
|
if (tmp != NULL)
|
||
|
|
evbuffer_free(tmp);
|
||
|
|
%(refname)s_clear(msg->%(name)s_data[off]);
|
||
|
|
return (-1);
|
||
|
|
}""" % self.GetTranslation()
|
||
|
|
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def CodeAdd(self):
|
||
|
|
code = \
|
||
|
|
"""%(ctype)s
|
||
|
|
%(parent_name)s_%(name)s_add(struct %(parent_name)s *msg)
|
||
|
|
{
|
||
|
|
if (++msg->%(name)s_length >= msg->%(name)s_num_allocated) {
|
||
|
|
int tobe_allocated = msg->%(name)s_num_allocated;
|
||
|
|
%(ctype)s* new_data = NULL;
|
||
|
|
tobe_allocated = !tobe_allocated ? 1 : tobe_allocated << 1;
|
||
|
|
new_data = (%(ctype)s*) realloc(msg->%(name)s_data,
|
||
|
|
tobe_allocated * sizeof(%(ctype)s));
|
||
|
|
if (new_data == NULL)
|
||
|
|
goto error;
|
||
|
|
msg->%(name)s_data = new_data;
|
||
|
|
msg->%(name)s_num_allocated = tobe_allocated;
|
||
|
|
}
|
||
|
|
msg->%(name)s_data[msg->%(name)s_length - 1] = %(refname)s_new();
|
||
|
|
if (msg->%(name)s_data[msg->%(name)s_length - 1] == NULL)
|
||
|
|
goto error;
|
||
|
|
msg->%(name)s_set = 1;
|
||
|
|
return (msg->%(name)s_data[msg->%(name)s_length - 1]);
|
||
|
|
error:
|
||
|
|
--msg->%(name)s_length;
|
||
|
|
return (NULL);
|
||
|
|
}
|
||
|
|
""" % self.GetTranslation()
|
||
|
|
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def CodeComplete(self, structname):
|
||
|
|
code = []
|
||
|
|
translate = self.GetTranslation()
|
||
|
|
|
||
|
|
if self.Optional():
|
||
|
|
code.append( 'if (%(structname)s->%(name)s_set)' % translate)
|
||
|
|
|
||
|
|
translate["structname"] = structname
|
||
|
|
tmp = """{
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < %(structname)s->%(name)s_length; ++i) {
|
||
|
|
if (%(refname)s_complete(%(structname)s->%(name)s_data[i]) == -1)
|
||
|
|
return (-1);
|
||
|
|
}
|
||
|
|
}""" % translate
|
||
|
|
code.extend(tmp.split('\n'))
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeUnmarshal(self, buf, tag_name, var_name):
|
||
|
|
translate = self.GetTranslation()
|
||
|
|
translate["var_name"] = var_name
|
||
|
|
translate["buf"] = buf
|
||
|
|
translate["tag_name"] = tag_name
|
||
|
|
code = """if (%(parent_name)s_%(name)s_add(%(var_name)s) == NULL)
|
||
|
|
return (-1);
|
||
|
|
if (evtag_unmarshal_%(refname)s(%(buf)s, %(tag_name)s,
|
||
|
|
%(var_name)s->%(name)s_data[%(var_name)s->%(name)s_length - 1]) == -1) {
|
||
|
|
--%(var_name)s->%(name)s_length;
|
||
|
|
event_warnx("%%s: failed to unmarshal %(name)s", __func__);
|
||
|
|
return (-1);
|
||
|
|
}""" % translate
|
||
|
|
|
||
|
|
return code.split('\n')
|
||
|
|
|
||
|
|
def CodeMarshal(self, buf, tag_name, var_name):
|
||
|
|
code = ['{',
|
||
|
|
' int i;',
|
||
|
|
' for (i = 0; i < %s->%s_length; ++i) {' % (
|
||
|
|
var_name, self._name),
|
||
|
|
' evtag_marshal_%s(%s, %s, %s->%s_data[i]);' % (
|
||
|
|
self._refname, buf, tag_name, var_name, self._name),
|
||
|
|
' }',
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeClear(self, structname):
|
||
|
|
code = [ 'if (%s->%s_set == 1) {' % (structname, self.Name()),
|
||
|
|
' int i;',
|
||
|
|
' for (i = 0; i < %s->%s_length; ++i) {' % (
|
||
|
|
structname, self.Name()),
|
||
|
|
' %s_free(%s->%s_data[i]);' % (
|
||
|
|
self._refname, structname, self.Name()),
|
||
|
|
' }',
|
||
|
|
' free(%s->%s_data);' % (structname, self.Name()),
|
||
|
|
' %s->%s_data = NULL;' % (structname, self.Name()),
|
||
|
|
' %s->%s_set = 0;' % (structname, self.Name()),
|
||
|
|
' %s->%s_length = 0;' % (structname, self.Name()),
|
||
|
|
' %s->%s_num_allocated = 0;' % (structname, self.Name()),
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeNew(self, name):
|
||
|
|
code = ['%s->%s_data = NULL;' % (name, self._name),
|
||
|
|
'%s->%s_length = 0;' % (name, self._name),
|
||
|
|
'%s->%s_num_allocated = 0;' % (name, self._name)]
|
||
|
|
return code
|
||
|
|
|
||
|
|
def CodeFree(self, name):
|
||
|
|
code = ['if (%s->%s_data != NULL) {' % (name, self._name),
|
||
|
|
' int i;',
|
||
|
|
' for (i = 0; i < %s->%s_length; ++i) {' % (
|
||
|
|
name, self._name),
|
||
|
|
' %s_free(%s->%s_data[i]); ' % (
|
||
|
|
self._refname, name, self._name),
|
||
|
|
' %s->%s_data[i] = NULL;' % (name, self._name),
|
||
|
|
' }',
|
||
|
|
' free(%s->%s_data);' % (name, self._name),
|
||
|
|
' %s->%s_data = NULL;' % (name, self._name),
|
||
|
|
' %s->%s_length = 0;' % (name, self._name),
|
||
|
|
' %s->%s_num_allocated = 0;' % (name, self._name),
|
||
|
|
'}'
|
||
|
|
]
|
||
|
|
|
||
|
|
return code
|
||
|
|
|
||
|
|
def Declaration(self):
|
||
|
|
dcl = ['struct %s **%s_data;' % (self._refname, self._name),
|
||
|
|
'int %s_length;' % self._name,
|
||
|
|
'int %s_num_allocated;' % self._name ]
|
||
|
|
|
||
|
|
return dcl
|
||
|
|
|
||
|
|
def NormalizeLine(line):
|
||
|
|
global white
|
||
|
|
global cppcomment
|
||
|
|
|
||
|
|
line = cppcomment.sub('', line)
|
||
|
|
line = line.strip()
|
||
|
|
line = white.sub(' ', line)
|
||
|
|
|
||
|
|
return line
|
||
|
|
|
||
|
|
def ProcessOneEntry(newstruct, entry):
|
||
|
|
optional = 0
|
||
|
|
array = 0
|
||
|
|
entry_type = ''
|
||
|
|
name = ''
|
||
|
|
tag = ''
|
||
|
|
tag_set = None
|
||
|
|
separator = ''
|
||
|
|
fixed_length = ''
|
||
|
|
|
||
|
|
tokens = entry.split(' ')
|
||
|
|
while tokens:
|
||
|
|
token = tokens[0]
|
||
|
|
tokens = tokens[1:]
|
||
|
|
|
||
|
|
if not entry_type:
|
||
|
|
if not optional and token == 'optional':
|
||
|
|
optional = 1
|
||
|
|
continue
|
||
|
|
|
||
|
|
if not array and token == 'array':
|
||
|
|
array = 1
|
||
|
|
continue
|
||
|
|
|
||
|
|
if not entry_type:
|
||
|
|
entry_type = token
|
||
|
|
continue
|
||
|
|
|
||
|
|
if not name:
|
||
|
|
res = re.match(r'^([^\[\]]+)(\[.*\])?$', token)
|
||
|
|
if not res:
|
||
|
|
print >>sys.stderr, 'Cannot parse name: \"%s\" around %d' % (
|
||
|
|
entry, line_count)
|
||
|
|
sys.exit(1)
|
||
|
|
name = res.group(1)
|
||
|
|
fixed_length = res.group(2)
|
||
|
|
if fixed_length:
|
||
|
|
fixed_length = fixed_length[1:-1]
|
||
|
|
continue
|
||
|
|
|
||
|
|
if not separator:
|
||
|
|
separator = token
|
||
|
|
if separator != '=':
|
||
|
|
print >>sys.stderr, 'Expected "=" after name \"%s\" got %s' % (
|
||
|
|
name, token)
|
||
|
|
sys.exit(1)
|
||
|
|
continue
|
||
|
|
|
||
|
|
if not tag_set:
|
||
|
|
tag_set = 1
|
||
|
|
if not re.match(r'^(0x)?[0-9]+$', token):
|
||
|
|
print >>sys.stderr, 'Expected tag number: \"%s\"' % entry
|
||
|
|
sys.exit(1)
|
||
|
|
tag = int(token, 0)
|
||
|
|
continue
|
||
|
|
|
||
|
|
print >>sys.stderr, 'Cannot parse \"%s\"' % entry
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
if not tag_set:
|
||
|
|
print >>sys.stderr, 'Need tag number: \"%s\"' % entry
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
# Create the right entry
|
||
|
|
if entry_type == 'bytes':
|
||
|
|
if fixed_length:
|
||
|
|
newentry = EntryBytes(entry_type, name, tag, fixed_length)
|
||
|
|
else:
|
||
|
|
newentry = EntryVarBytes(entry_type, name, tag)
|
||
|
|
elif entry_type == 'int' and not fixed_length:
|
||
|
|
newentry = EntryInt(entry_type, name, tag)
|
||
|
|
elif entry_type == 'string' and not fixed_length:
|
||
|
|
newentry = EntryString(entry_type, name, tag)
|
||
|
|
else:
|
||
|
|
res = re.match(r'^struct\[(%s)\]$' % _STRUCT_RE,
|
||
|
|
entry_type, re.IGNORECASE)
|
||
|
|
if res:
|
||
|
|
# References another struct defined in our file
|
||
|
|
newentry = EntryStruct(entry_type, name, tag, res.group(1))
|
||
|
|
else:
|
||
|
|
print >>sys.stderr, 'Bad type: "%s" in "%s"' % (entry_type, entry)
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
structs = []
|
||
|
|
|
||
|
|
if optional:
|
||
|
|
newentry.MakeOptional()
|
||
|
|
if array:
|
||
|
|
newentry.MakeArray()
|
||
|
|
|
||
|
|
newentry.SetStruct(newstruct)
|
||
|
|
newentry.SetLineCount(line_count)
|
||
|
|
newentry.Verify()
|
||
|
|
|
||
|
|
if array:
|
||
|
|
# We need to encapsulate this entry into a struct
|
||
|
|
newname = newentry.Name()+ '_array'
|
||
|
|
|
||
|
|
# Now borgify the new entry.
|
||
|
|
newentry = EntryArray(newentry)
|
||
|
|
newentry.SetStruct(newstruct)
|
||
|
|
newentry.SetLineCount(line_count)
|
||
|
|
newentry.MakeArray()
|
||
|
|
|
||
|
|
newstruct.AddEntry(newentry)
|
||
|
|
|
||
|
|
return structs
|
||
|
|
|
||
|
|
def ProcessStruct(data):
|
||
|
|
tokens = data.split(' ')
|
||
|
|
|
||
|
|
# First three tokens are: 'struct' 'name' '{'
|
||
|
|
newstruct = Struct(tokens[1])
|
||
|
|
|
||
|
|
inside = ' '.join(tokens[3:-1])
|
||
|
|
|
||
|
|
tokens = inside.split(';')
|
||
|
|
|
||
|
|
structs = []
|
||
|
|
|
||
|
|
for entry in tokens:
|
||
|
|
entry = NormalizeLine(entry)
|
||
|
|
if not entry:
|
||
|
|
continue
|
||
|
|
|
||
|
|
# It's possible that new structs get defined in here
|
||
|
|
structs.extend(ProcessOneEntry(newstruct, entry))
|
||
|
|
|
||
|
|
structs.append(newstruct)
|
||
|
|
return structs
|
||
|
|
|
||
|
|
def GetNextStruct(file):
|
||
|
|
global line_count
|
||
|
|
global cppdirect
|
||
|
|
|
||
|
|
got_struct = 0
|
||
|
|
|
||
|
|
processed_lines = []
|
||
|
|
|
||
|
|
have_c_comment = 0
|
||
|
|
data = ''
|
||
|
|
while 1:
|
||
|
|
line = file.readline()
|
||
|
|
if not line:
|
||
|
|
break
|
||
|
|
|
||
|
|
line_count += 1
|
||
|
|
line = line[:-1]
|
||
|
|
|
||
|
|
if not have_c_comment and re.search(r'/\*', line):
|
||
|
|
if re.search(r'/\*.*\*/', line):
|
||
|
|
line = re.sub(r'/\*.*\*/', '', line)
|
||
|
|
else:
|
||
|
|
line = re.sub(r'/\*.*$', '', line)
|
||
|
|
have_c_comment = 1
|
||
|
|
|
||
|
|
if have_c_comment:
|
||
|
|
if not re.search(r'\*/', line):
|
||
|
|
continue
|
||
|
|
have_c_comment = 0
|
||
|
|
line = re.sub(r'^.*\*/', '', line)
|
||
|
|
|
||
|
|
line = NormalizeLine(line)
|
||
|
|
|
||
|
|
if not line:
|
||
|
|
continue
|
||
|
|
|
||
|
|
if not got_struct:
|
||
|
|
if re.match(r'#include ["<].*[>"]', line):
|
||
|
|
cppdirect.append(line)
|
||
|
|
continue
|
||
|
|
|
||
|
|
if re.match(r'^#(if( |def)|endif)', line):
|
||
|
|
cppdirect.append(line)
|
||
|
|
continue
|
||
|
|
|
||
|
|
if re.match(r'^#define', line):
|
||
|
|
headerdirect.append(line)
|
||
|
|
continue
|
||
|
|
|
||
|
|
if not re.match(r'^struct %s {$' % _STRUCT_RE,
|
||
|
|
line, re.IGNORECASE):
|
||
|
|
print >>sys.stderr, 'Missing struct on line %d: %s' % (
|
||
|
|
line_count, line)
|
||
|
|
sys.exit(1)
|
||
|
|
else:
|
||
|
|
got_struct = 1
|
||
|
|
data += line
|
||
|
|
continue
|
||
|
|
|
||
|
|
# We are inside the struct
|
||
|
|
tokens = line.split('}')
|
||
|
|
if len(tokens) == 1:
|
||
|
|
data += ' ' + line
|
||
|
|
continue
|
||
|
|
|
||
|
|
if len(tokens[1]):
|
||
|
|
print >>sys.stderr, 'Trailing garbage after struct on line %d' % (
|
||
|
|
line_count )
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
# We found the end of the struct
|
||
|
|
data += ' %s}' % tokens[0]
|
||
|
|
break
|
||
|
|
|
||
|
|
# Remove any comments, that might be in there
|
||
|
|
data = re.sub(r'/\*.*\*/', '', data)
|
||
|
|
|
||
|
|
return data
|
||
|
|
|
||
|
|
|
||
|
|
def Parse(file):
|
||
|
|
"""
|
||
|
|
Parses the input file and returns C code and corresponding header file.
|
||
|
|
"""
|
||
|
|
|
||
|
|
entities = []
|
||
|
|
|
||
|
|
while 1:
|
||
|
|
# Just gets the whole struct nicely formatted
|
||
|
|
data = GetNextStruct(file)
|
||
|
|
|
||
|
|
if not data:
|
||
|
|
break
|
||
|
|
|
||
|
|
entities.extend(ProcessStruct(data))
|
||
|
|
|
||
|
|
return entities
|
||
|
|
|
||
|
|
def GuardName(name):
|
||
|
|
name = '_'.join(name.split('.'))
|
||
|
|
name = '_'.join(name.split('/'))
|
||
|
|
guard = '_'+name.upper()+'_'
|
||
|
|
|
||
|
|
return guard
|
||
|
|
|
||
|
|
def HeaderPreamble(name):
|
||
|
|
guard = GuardName(name)
|
||
|
|
pre = (
|
||
|
|
'/*\n'
|
||
|
|
' * Automatically generated from %s\n'
|
||
|
|
' */\n\n'
|
||
|
|
'#ifndef %s\n'
|
||
|
|
'#define %s\n\n' ) % (
|
||
|
|
name, guard, guard)
|
||
|
|
|
||
|
|
# insert stdint.h - let's hope everyone has it
|
||
|
|
pre += (
|
||
|
|
'#include <event-config.h>\n'
|
||
|
|
'#ifdef _EVENT_HAVE_STDINT_H\n'
|
||
|
|
'#include <stdint.h>\n'
|
||
|
|
'#endif\n' )
|
||
|
|
|
||
|
|
for statement in headerdirect:
|
||
|
|
pre += '%s\n' % statement
|
||
|
|
if headerdirect:
|
||
|
|
pre += '\n'
|
||
|
|
|
||
|
|
pre += (
|
||
|
|
'#define EVTAG_HAS(msg, member) ((msg)->member##_set == 1)\n'
|
||
|
|
'#ifdef __GNUC__\n'
|
||
|
|
'#define EVTAG_ASSIGN(msg, member, args...) '
|
||
|
|
'(*(msg)->base->member##_assign)(msg, ## args)\n'
|
||
|
|
'#define EVTAG_GET(msg, member, args...) '
|
||
|
|
'(*(msg)->base->member##_get)(msg, ## args)\n'
|
||
|
|
'#else\n'
|
||
|
|
'#define EVTAG_ASSIGN(msg, member, ...) '
|
||
|
|
'(*(msg)->base->member##_assign)(msg, ## __VA_ARGS__)\n'
|
||
|
|
'#define EVTAG_GET(msg, member, ...) '
|
||
|
|
'(*(msg)->base->member##_get)(msg, ## __VA_ARGS__)\n'
|
||
|
|
'#endif\n'
|
||
|
|
'#define EVTAG_ADD(msg, member) (*(msg)->base->member##_add)(msg)\n'
|
||
|
|
'#define EVTAG_LEN(msg, member) ((msg)->member##_length)\n'
|
||
|
|
)
|
||
|
|
|
||
|
|
return pre
|
||
|
|
|
||
|
|
|
||
|
|
def HeaderPostamble(name):
|
||
|
|
guard = GuardName(name)
|
||
|
|
return '#endif /* %s */' % guard
|
||
|
|
|
||
|
|
def BodyPreamble(name):
|
||
|
|
global _NAME
|
||
|
|
global _VERSION
|
||
|
|
|
||
|
|
header_file = '.'.join(name.split('.')[:-1]) + '.gen.h'
|
||
|
|
|
||
|
|
pre = ( '/*\n'
|
||
|
|
' * Automatically generated from %s\n'
|
||
|
|
' * by %s/%s. DO NOT EDIT THIS FILE.\n'
|
||
|
|
' */\n\n' ) % (name, _NAME, _VERSION)
|
||
|
|
pre += ( '#include <sys/types.h>\n'
|
||
|
|
'#ifdef _EVENT_HAVE_SYS_TIME_H\n'
|
||
|
|
'#include <sys/time.h>\n'
|
||
|
|
'#endif\n'
|
||
|
|
'#include <stdlib.h>\n'
|
||
|
|
'#include <string.h>\n'
|
||
|
|
'#include <assert.h>\n'
|
||
|
|
'#define EVENT_NO_STRUCT\n'
|
||
|
|
'#include <event.h>\n\n'
|
||
|
|
'#ifdef _EVENT___func__\n'
|
||
|
|
'#define __func__ _EVENT___func__\n'
|
||
|
|
'#endif\n' )
|
||
|
|
|
||
|
|
for statement in cppdirect:
|
||
|
|
pre += '%s\n' % statement
|
||
|
|
|
||
|
|
pre += '\n#include "%s"\n\n' % header_file
|
||
|
|
|
||
|
|
pre += 'void event_err(int eval, const char *fmt, ...);\n'
|
||
|
|
pre += 'void event_warn(const char *fmt, ...);\n'
|
||
|
|
pre += 'void event_errx(int eval, const char *fmt, ...);\n'
|
||
|
|
pre += 'void event_warnx(const char *fmt, ...);\n\n'
|
||
|
|
|
||
|
|
return pre
|
||
|
|
|
||
|
|
def main(argv):
|
||
|
|
if len(argv) < 2 or not argv[1]:
|
||
|
|
print >>sys.stderr, 'Need RPC description file as first argument.'
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
filename = argv[1]
|
||
|
|
|
||
|
|
ext = filename.split('.')[-1]
|
||
|
|
if ext != 'rpc':
|
||
|
|
print >>sys.stderr, 'Unrecognized file extension: %s' % ext
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
print >>sys.stderr, 'Reading \"%s\"' % filename
|
||
|
|
|
||
|
|
fp = open(filename, 'r')
|
||
|
|
entities = Parse(fp)
|
||
|
|
fp.close()
|
||
|
|
|
||
|
|
header_file = '.'.join(filename.split('.')[:-1]) + '.gen.h'
|
||
|
|
impl_file = '.'.join(filename.split('.')[:-1]) + '.gen.c'
|
||
|
|
|
||
|
|
print >>sys.stderr, '... creating "%s"' % header_file
|
||
|
|
header_fp = open(header_file, 'w')
|
||
|
|
print >>header_fp, HeaderPreamble(filename)
|
||
|
|
|
||
|
|
# Create forward declarations: allows other structs to reference
|
||
|
|
# each other
|
||
|
|
for entry in entities:
|
||
|
|
entry.PrintForwardDeclaration(header_fp)
|
||
|
|
print >>header_fp, ''
|
||
|
|
|
||
|
|
for entry in entities:
|
||
|
|
entry.PrintTags(header_fp)
|
||
|
|
entry.PrintDeclaration(header_fp)
|
||
|
|
print >>header_fp, HeaderPostamble(filename)
|
||
|
|
header_fp.close()
|
||
|
|
|
||
|
|
print >>sys.stderr, '... creating "%s"' % impl_file
|
||
|
|
impl_fp = open(impl_file, 'w')
|
||
|
|
print >>impl_fp, BodyPreamble(filename)
|
||
|
|
for entry in entities:
|
||
|
|
entry.PrintCode(impl_fp)
|
||
|
|
impl_fp.close()
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
main(sys.argv)
|