628 lines
13 KiB
C
628 lines
13 KiB
C
/* tools/convertilines.c
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* Copyright (c) 2002 Hybrid Development Team
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1.Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2.Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3.The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: convertilines.c 6 2005-09-10 01:02:21Z nenolod $
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#define BUFSIZE 512
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#define FLAGS_RESTRICTED 0x001
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#define FLAGS_EXCEEDLIMIT 0x002
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#define FLAGS_KLINEEXEMPT 0x004
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#define FLAGS_GLINEEXEMPT 0x008
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#define FLAGS_NEEDIDENT 0x010
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#define FLAGS_NOTILDE 0x020
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struct flag_table_struct
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{
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const char *name;
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int flag;
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};
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static struct flag_table_struct flag_table[] =
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{
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{ "restricted", FLAGS_RESTRICTED },
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{ "exceed_limit", FLAGS_EXCEEDLIMIT },
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{ "kline_exempt", FLAGS_KLINEEXEMPT },
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{ "gline_exempt", FLAGS_GLINEEXEMPT },
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{ "need_ident", FLAGS_NEEDIDENT },
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{ "no_tilde", FLAGS_NOTILDE },
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{ NULL, 0 }
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};
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struct AuthBlock
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{
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struct AuthBlock *next;
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char **hostname;
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int hostnum;
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char *spoof;
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char *passwd;
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int class;
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int flags;
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/* indicates one of above */
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int special;
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int specialk;
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};
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static struct AuthBlock *auth_spoof = NULL;
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static struct AuthBlock *auth_special = NULL;
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static struct AuthBlock *auth_passwd = NULL;
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static struct AuthBlock *auth_general = NULL;
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static struct AuthBlock *auth_restricted = NULL;
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static void ConvertConf(FILE* file,FILE *out);
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static void set_flags(struct AuthBlock *, const char *, const char *);
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static void usage(void);
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static char *getfield(char *);
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static struct AuthBlock *find_matching_conf(struct AuthBlock *);
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static void ReplaceQuotes(char *out, char *in);
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static void oldParseOneLine(FILE *out, char *in);
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static void write_auth_entries(FILE *out);
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static void write_specific(FILE *out, struct AuthBlock *);
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static int match(struct AuthBlock *, struct AuthBlock *);
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int main(int argc,char *argv[])
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{
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FILE *in;
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FILE *out;
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if(argc < 3)
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usage();
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if((in = fopen(argv[1],"r")) == NULL)
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{
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fprintf(stderr, "Can't open %s for reading\n", argv[1]);
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usage();
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}
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if((out = fopen(argv[2],"w")) == NULL)
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{
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fprintf(stderr, "Can't open %s for writing\n", argv[2]);
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usage();
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}
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ConvertConf(in, out);
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return 0;
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}
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void usage()
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{
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fprintf(stderr, "convertilines conf.old conf.new\n");
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exit(-1);
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}
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/*
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* ConvertConf()
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* Read configuration file.
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*
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*
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* Inputs - FILE* to config file to convert
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* - FILE* to output for new style conf
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*
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*/
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#define MAXCONFLINKS 150
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static void ConvertConf(FILE* file, FILE *out)
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{
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char line[BUFSIZE];
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char quotedLine[BUFSIZE];
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char* p;
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while (fgets(line, sizeof(line), file))
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{
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if ((p = strchr(line, '\n')))
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*p = '\0';
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ReplaceQuotes(quotedLine,line);
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if(!*quotedLine || quotedLine[0] == '#' || quotedLine[0] == '\n' ||
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quotedLine[0] == ' ' || quotedLine[0] == '\t')
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continue;
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if(quotedLine[0] == '.')
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{
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char *filename;
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char *back;
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if(!strncmp(quotedLine+1,"include ",8))
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{
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if( (filename = strchr(quotedLine+8,'"')) )
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filename++;
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else
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{
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fprintf(stderr, "Bad config line: %s", quotedLine);
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continue;
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}
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if((back = strchr(filename,'"')))
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*back = '\0';
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else
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{
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fprintf(stderr, "Bad config line: %s", quotedLine);
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continue;
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}
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}
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}
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/* Could we test if it's conf line at all? -Vesa */
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if (quotedLine[1] == ':')
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oldParseOneLine(out,quotedLine);
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}
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fclose(file);
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write_auth_entries(out);
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fclose(out);
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}
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/*
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* ReplaceQuotes
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* Inputs - input line to quote
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* Output - quoted line
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* Side Effects - All quoted chars in input are replaced
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* with quoted values in output, # chars replaced with '\0'
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* otherwise input is copied to output.
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*/
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static void ReplaceQuotes(char* quotedLine,char *inputLine)
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{
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char *in;
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char *out;
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static char quotes[] = {
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0, /* */
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0, /* a */
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'\b', /* b */
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0, /* c */
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0, /* d */
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0, /* e */
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'\f', /* f */
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0, /* g */
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0, /* h */
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0, /* i */
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0, /* j */
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0, /* k */
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0, /* l */
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0, /* m */
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'\n', /* n */
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0, /* o */
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0, /* p */
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0, /* q */
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'\r', /* r */
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0, /* s */
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'\t', /* t */
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0, /* u */
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'\v', /* v */
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0, /* w */
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0, /* x */
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0, /* y */
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0, /* z */
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0,0,0,0,0,0
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};
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/*
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* Do quoting of characters and # detection.
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*/
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for (out = quotedLine,in = inputLine; *in; out++, in++)
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{
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if (*in == '\\')
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{
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in++;
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if(*in == '\\')
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*out = '\\';
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else if(*in == '#')
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*out = '#';
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else
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*out = quotes[ (unsigned int) (*in & 0x1F) ];
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}
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else if (*in == '#')
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{
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*out = '\0';
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return;
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}
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else
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*out = *in;
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}
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*out = '\0';
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}
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/*
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* oldParseOneLine
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* Inputs - pointer to line to parse
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* - pointer to output to write
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* Output -
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* Side Effects - Parse one old style conf line.
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*/
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static void oldParseOneLine(FILE *out,char* line)
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{
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char conf_letter;
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char* tmp;
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const char* host_field=NULL;
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const char* passwd_field=NULL;
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const char* user_field=NULL;
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const char* port_field = NULL;
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const char* classconf_field = NULL;
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int class_field = 0;
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tmp = getfield(line);
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conf_letter = *tmp;
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for (;;) /* Fake loop, that I can use break here --msa */
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{
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/* host field */
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if ((host_field = getfield(NULL)) == NULL)
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return;
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/* pass field */
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if ((passwd_field = getfield(NULL)) == NULL)
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break;
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/* user field */
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if ((user_field = getfield(NULL)) == NULL)
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break;
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/* port field */
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if ((port_field = getfield(NULL)) == NULL)
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break;
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/* class field */
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if ((classconf_field = getfield(NULL)) == NULL)
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break;
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break;
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}
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if (!passwd_field)
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passwd_field = "";
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if (!user_field)
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user_field = "";
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if (!port_field)
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port_field = "";
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if (classconf_field)
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class_field = atoi(classconf_field);
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switch( conf_letter )
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{
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case 'i':
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case 'I':
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{
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struct AuthBlock *ptr;
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struct AuthBlock *tempptr;
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tempptr = malloc(sizeof(struct AuthBlock));
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memset(tempptr, 0, sizeof(*tempptr));
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if(conf_letter == 'i')
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{
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tempptr->flags |= FLAGS_RESTRICTED;
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tempptr->specialk = 1;
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}
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if(passwd_field && *passwd_field)
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tempptr->passwd = strdup(passwd_field);
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tempptr->class = class_field;
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set_flags(tempptr, user_field, host_field);
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/* dont add specials/passworded ones to existing auth blocks */
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if((ptr = find_matching_conf(tempptr)))
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{
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int authindex;
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authindex = ptr->hostnum;
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ptr->hostnum++;
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ptr->hostname = realloc((void *)ptr->hostname, ptr->hostnum * sizeof(void *));
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ptr->hostname[authindex] = strdup(tempptr->hostname[0]);
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free(tempptr->hostname[0]);
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free(tempptr->hostname);
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free(tempptr);
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}
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else
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{
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ptr = tempptr;
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if(ptr->spoof)
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{
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ptr->next = auth_spoof;
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auth_spoof = ptr;
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}
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else if(ptr->special)
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{
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ptr->next = auth_special;
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auth_special = ptr;
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}
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else if(ptr->passwd)
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{
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ptr->next = auth_passwd;
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auth_passwd = ptr;
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}
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else if(ptr->specialk)
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{
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ptr->next = auth_restricted;
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auth_restricted = ptr;
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}
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else
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{
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ptr->next = auth_general;
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auth_general = ptr;
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}
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}
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}
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break;
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default:
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break;
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}
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}
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static void write_auth_entries(FILE *out)
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{
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struct AuthBlock *ptr;
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for(ptr = auth_spoof; ptr; ptr = ptr->next)
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write_specific(out, ptr);
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for(ptr = auth_special; ptr; ptr = ptr->next)
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write_specific(out, ptr);
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for(ptr = auth_passwd; ptr; ptr = ptr->next)
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write_specific(out, ptr);
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for(ptr = auth_general; ptr; ptr = ptr->next)
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write_specific(out, ptr);
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for(ptr = auth_restricted; ptr; ptr = ptr->next)
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write_specific(out, ptr);
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}
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static void write_specific(FILE *out, struct AuthBlock *ptr)
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{
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int i;
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int prev = 0;
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fprintf(out, "auth {\n");
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for(i = 0; i < ptr->hostnum; i++)
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fprintf(out, "\tuser = \"%s\";\n", ptr->hostname[i]);
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if(ptr->spoof)
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fprintf(out, "\tspoof = \"%s\";\n", ptr->spoof);
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if(ptr->passwd)
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fprintf(out, "\tpassword = \"%s\";\n", ptr->passwd);
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if(ptr->flags)
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{
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fprintf(out, "\tflags = ");
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for(i = 0; flag_table[i].flag; i++)
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{
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if(ptr->flags & flag_table[i].flag)
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{
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fprintf(out, "%s%s",
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prev ? ", " : "",
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flag_table[i].name);
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prev = 1;
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}
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}
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fprintf(out, ";\n");
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}
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fprintf(out, "\tclass = \"%d\";\n", ptr->class);
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fprintf(out, "};\n");
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}
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/*
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* field breakup for ircd.conf file.
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*/
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static char *getfield(char *newline)
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{
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static char *line = NULL;
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char *end, *field;
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if (newline)
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line = newline;
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if (line == NULL)
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return(NULL);
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field = line;
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if ((end = strchr(line,':')) == NULL)
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{
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line = NULL;
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if ((end = strchr(field,'\n')) == NULL)
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end = field + strlen(field);
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}
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else
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line = end + 1;
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*end = '\0';
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return(field);
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}
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struct AuthBlock *find_matching_conf(struct AuthBlock *acptr)
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{
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struct AuthBlock *ptr;
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for(ptr = auth_spoof; ptr; ptr = ptr->next)
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{
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if(match(ptr, acptr))
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return ptr;
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}
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for(ptr = auth_special; ptr; ptr = ptr->next)
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{
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if(match(ptr, acptr))
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return ptr;
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}
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for(ptr = auth_passwd; ptr; ptr = ptr->next)
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{
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if(match(ptr, acptr))
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return ptr;
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}
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for(ptr = auth_restricted; ptr; ptr = ptr->next)
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{
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if(match(ptr, acptr))
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return ptr;
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}
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for(ptr = auth_general; ptr; ptr = ptr->next)
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{
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if(match(ptr, acptr))
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return ptr;
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}
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return NULL;
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}
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static int match(struct AuthBlock *ptr, struct AuthBlock *acptr)
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{
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if((ptr->class == acptr->class) &&
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(ptr->flags == acptr->flags))
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{
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const char *p1, *p2;
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/* check the spoofs match.. */
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if(ptr->spoof)
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p1 = ptr->spoof;
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else
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p1 = "";
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if(acptr->spoof)
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p2 = acptr->spoof;
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else
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p2 = "";
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if(strcmp(p1, p2))
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return 0;
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/* now check the passwords match.. */
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if(ptr->passwd)
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p1 = ptr->passwd;
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else
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p1 = "";
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if(acptr->passwd)
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p2 = acptr->passwd;
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else
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p2 = "";
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if(strcmp(p1, p2))
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return 0;
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return 1;
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}
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return 0;
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}
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void set_flags(struct AuthBlock *ptr, const char *user_field, const char *host_field)
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{
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for(; *user_field; user_field++)
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{
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switch(*user_field)
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{
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case '=':
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if(host_field)
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ptr->spoof = strdup(host_field);
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ptr->special = 1;
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break;
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case '-':
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ptr->flags |= FLAGS_NOTILDE;
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ptr->special = 1;
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break;
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case '+':
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ptr->flags |= FLAGS_NEEDIDENT;
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ptr->specialk = 1;
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break;
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case '^': /* is exempt from k/g lines */
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ptr->flags |= FLAGS_KLINEEXEMPT;
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ptr->special = 1;
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break;
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case '>':
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ptr->flags |= FLAGS_EXCEEDLIMIT;
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ptr->special = 1;
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break;
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case '_':
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ptr->flags |= FLAGS_GLINEEXEMPT;
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ptr->special = 1;
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break;
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case '!':
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case '$':
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case '%':
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case '&':
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case '<':
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break;
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default:
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{
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int authindex;
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authindex = ptr->hostnum;
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ptr->hostnum++;
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ptr->hostname = realloc((void *)ptr->hostname, ptr->hostnum * sizeof(void *));
|
|
|
|
/* if the IP field contains something useful, use that */
|
|
if(strcmp(host_field, "NOMATCH") && (*host_field != 'x') &&
|
|
strcmp(host_field, "*") && !ptr->spoof)
|
|
ptr->hostname[authindex] = strdup(host_field);
|
|
else
|
|
ptr->hostname[authindex] = strdup(user_field);
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|