ircd-hybrid-7.2/src/csvlib.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  csvlib.c - set of functions to deal with csv type of conf files
 *
 *  Copyright (C) 2003 by Diane Bruce, Stuart Walsh
 *  Use it anywhere you like, if you like it buy us a beer.
 *  If it's broken, don't bother us with the lawyers.
 *
 *  $Id$
 */

#include "config.h"
#ifdef HAVE_LIBPCRE
#include <pcre.h>
#endif
#include "stdinc.h"
#include "list.h"
#include "s_log.h"
#include "s_conf.h"
#include "hostmask.h"
#include "client.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "memory.h"
#include "send.h"
#include "resv.h"
#include "s_serv.h"

/* Fix "statement not reached" warnings on Sun WorkShop C */
#ifdef __SUNPRO_C
#   pragma error_messages(off, E_STATEMENT_NOT_REACHED)
#endif


static void parse_csv_line(char *, ...);
static int write_csv_line(FBFILE *, const char *, ...);
static int flush_write(struct Client *, FBFILE *, FBFILE *, 
                       const char *, const char *);
static char *getfield(char *);

/* parse_csv_file()
 *
 * inputs       - FILE pointer
 *              - type of conf to parse
 * output       - none
 * side effects -
 */
void
parse_csv_file(FBFILE *file, ConfType conf_type)
{
  struct ConfItem *conf;
  struct AccessItem *aconf;
  struct MatchItem *match_item;
  char  *name_field=NULL;
  char  *user_field=NULL;
  char  *reason_field=NULL;
  char  *oper_reason=NULL;
  char  *host_field=NULL;
  char  line[IRCD_BUFSIZE];
  char  *p;

  while (fbgets(line, sizeof(line), file) != NULL)
  {
    if ((p = strchr(line, '\n')) != NULL)
      *p = '\0';

    if ((line[0] == '\0') || (line[0] == '#'))
      continue;

    switch(conf_type)
    {
    case KLINE_TYPE:
      parse_csv_line(line, &user_field, &host_field, &reason_field, NULL);
      conf = make_conf_item(KLINE_TYPE);
      aconf = map_to_conf(conf);

      if (host_field != NULL)
        DupString(aconf->host, host_field);
      if (reason_field != NULL)
        DupString(aconf->reason, reason_field);
      if (user_field != NULL)
        DupString(aconf->user, user_field);
      if (aconf->host != NULL)
        add_conf_by_address(CONF_KILL, aconf);
      break;
#ifdef HAVE_LIBPCRE
    case RKLINE_TYPE:
    {
      const char *errptr = NULL;
      pcre *exp_user = NULL, *exp_host = NULL;

      parse_csv_line(line, &user_field, &host_field, &reason_field, NULL);

      if (host_field == NULL || user_field == NULL)
        break;

      if (!(exp_user = ircd_pcre_compile(user_field, &errptr)) ||
          !(exp_host = ircd_pcre_compile(host_field, &errptr)))
      {
        sendto_realops_flags(UMODE_ALL, L_ALL,
                  "Failed to add regular expression based K-Line: %s", errptr);
        break;
      }

      aconf = map_to_conf(make_conf_item(RKLINE_TYPE));

      aconf->regexuser = exp_user;
      aconf->regexhost = exp_host;

      DupString(aconf->user, user_field);
      DupString(aconf->host, host_field);

      if (reason_field != NULL)
        DupString(aconf->reason, reason_field);
      else
        DupString(aconf->reason, "No reason");

    }
      break;
#endif
    case DLINE_TYPE:
      parse_csv_line(line, &host_field, &reason_field, NULL);

      if (host_field && parse_netmask(host_field, NULL, NULL) != HM_HOST)
      {
        aconf = map_to_conf(make_conf_item(DLINE_TYPE));
        DupString(aconf->host, host_field);

        if (reason_field != NULL)
          DupString(aconf->reason, reason_field);
        else
          DupString(aconf->reason, "No reason");
        add_conf_by_address(CONF_DLINE, aconf);
      }

      break;

    case XLINE_TYPE:
      parse_csv_line(line, &name_field, &reason_field, &oper_reason, NULL);
      conf = make_conf_item(XLINE_TYPE);
      match_item = (struct MatchItem *)map_to_conf(conf);
      if (name_field != NULL)
        DupString(conf->name, name_field);
      if (reason_field != NULL)
        DupString(match_item->reason, reason_field);
      break;
#ifdef HAVE_LIBPCRE
    case RXLINE_TYPE:
    {
      const char *errptr = NULL;
      pcre *exp_p = NULL;

      parse_csv_line(line, &name_field, &reason_field, &oper_reason, NULL);

      if (name_field == NULL)
        break;

      if (!(exp_p = ircd_pcre_compile(name_field, &errptr)))
      {
        sendto_realops_flags(UMODE_ALL, L_ALL,
                             "Failed to add regular expression based X-Line: %s", errptr);
        break;
      }

      conf = make_conf_item(RXLINE_TYPE);
      conf->regexpname = exp_p;
      match_item = map_to_conf(conf);
      DupString(conf->name, name_field);

      if (reason_field != NULL)
        DupString(match_item->reason, reason_field);
      else
        DupString(match_item->reason, "No reason");
    }
      break;
#endif
    case CRESV_TYPE:
      parse_csv_line(line, &name_field, &reason_field, NULL);
      (void)create_channel_resv(name_field, reason_field, 0);
      break;

    case NRESV_TYPE:
      parse_csv_line(line, &name_field, &reason_field, NULL);
      (void)create_nick_resv(name_field, reason_field, 0);
      break;

    case GLINE_TYPE:
    case GDENY_TYPE:
    case CONF_TYPE:
    case OPER_TYPE:
    case CLIENT_TYPE:
    case SERVER_TYPE:
    case CLUSTER_TYPE:
    case HUB_TYPE:
    case LEAF_TYPE:
    case ULINE_TYPE:
    case EXEMPTDLINE_TYPE:
    case CLASS_TYPE:
    default:
      break;
    }
  }
}

/*
 * parse_csv_line()
 *
 * inputs       - pointer to line to parse
 * output       -
 * side effects -
 */

static void
parse_csv_line(char *line, ...)
{
  va_list args;
  char **dest;
  char *field = NULL;

  va_start(args, line);

  for (; ;)
  {
    dest = va_arg(args, char **);
    if ((dest == NULL) || ((field = getfield(field ? NULL : line)) == NULL))
    {
      va_end(args);
      return;
    }
    *dest = field;
  }
}

/* write_conf_line()
 *
 * inputs       - pointer to struct AccessItem
 *              - string current_date (small date)
 *              - time_t cur_time
 * output       - NONE
 * side effects - This function takes care of
 *                finding right conf file, writing
 *                the right lines to this file, 
 *                notifying the oper that their kline/dline etc. is in place
 *                notifying the opers on the server about the k/d etc. line
 *                
 * - Dianora
 */
void 
write_conf_line(struct Client *source_p, struct ConfItem *conf,
                const char *current_date, time_t cur_time)
{
  FBFILE *out;
  const char *filename, *from, *to;
  struct AccessItem *aconf;
  struct MatchItem *xconf;
  struct ResvChannel *cresv_p=NULL;
  struct MatchItem *nresv_p=NULL;
  ConfType type;

  type = conf->type;
  filename = get_conf_name(type);

  if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
  {
    from = me.id;
    to = source_p->id;
  }
  else
  {
    from = me.name;
    to = source_p->name;
  }

  if ((out = fbopen(filename, "a")) == NULL)
  {
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "*** Problem opening %s ", filename);
    return;
  }

  switch(type)
  {
  case KLINE_TYPE:
    aconf = (struct AccessItem *)map_to_conf(conf);
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "%s added K-Line for [%s@%s] [%s]",
                         get_oper_name(source_p),
                         aconf->user, aconf->host, aconf->reason);
    sendto_one(source_p, ":%s NOTICE %s :Added K-Line [%s@%s]",
               from, to, aconf->user, aconf->host);
    ilog(L_TRACE, "%s added K-Line for [%s@%s] [%s]",
         source_p->name, aconf->user, aconf->host, aconf->reason);
    log_oper_action(LOG_KLINE_TYPE, source_p, "[%s@%s] [%s]\n",
                    aconf->user, aconf->host, aconf->reason);
    write_csv_line(out, "%s%s%s%s%s%s%d",
                   aconf->user, aconf->host,
                   aconf->reason, aconf->oper_reason, current_date,
                   get_oper_name(source_p), cur_time);
    break;
#ifdef HAVE_LIBPCRE
  case RKLINE_TYPE:
    aconf = map_to_conf(conf);
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "%s added RK-Line for [%s@%s] [%s]",
                         get_oper_name(source_p),
                         aconf->user, aconf->host, aconf->reason);
    sendto_one(source_p, ":%s NOTICE %s :Added RK-Line [%s@%s]",
               from, to, aconf->user, aconf->host);
    ilog(L_TRACE, "%s added K-Line for [%s@%s] [%s]",
         source_p->name, aconf->user, aconf->host, aconf->reason);
    log_oper_action(LOG_RKLINE_TYPE, source_p, "[%s@%s] [%s]\n",
                    aconf->user, aconf->host, aconf->reason);
    write_csv_line(out, "%s%s%s%s%s%s%d",
                   aconf->user, aconf->host,
                   aconf->reason, aconf->oper_reason, current_date,
                   get_oper_name(source_p), cur_time);
    break;
#endif
  case DLINE_TYPE:
    aconf = (struct AccessItem *)map_to_conf(conf);
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "%s added D-Line for [%s] [%s]",
                         get_oper_name(source_p), aconf->host, aconf->reason);
    sendto_one(source_p, ":%s NOTICE %s :Added D-Line [%s] to %s",
               from, to, aconf->host, filename);
    ilog(L_TRACE, "%s added D-Line for [%s] [%s]",
         get_oper_name(source_p), aconf->host, aconf->reason);
    log_oper_action(LOG_DLINE_TYPE, source_p, "[%s] [%s]\n",
                    aconf->host, aconf->reason);
    write_csv_line(out, "%s%s%s%s%s%d",
                   aconf->host, aconf->reason, aconf->oper_reason, 
                   current_date,
                   get_oper_name(source_p), cur_time);
    break;

  case XLINE_TYPE:
    xconf = (struct MatchItem *)map_to_conf(conf);
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "%s added X-Line for [%s] [%s]",
                         get_oper_name(source_p), conf->name,
                         xconf->reason);
    sendto_one(source_p,
               ":%s NOTICE %s :Added X-Line [%s] [%d] [%s] to %s",
               from, to, conf->name, 
               xconf->action, xconf->reason, filename);
    ilog(L_TRACE, "%s added X-Line for [%s] [%s]",
         get_oper_name(source_p), conf->name, xconf->reason);
    write_csv_line(out, "%s%s%s%s%s%d",
                   conf->name, xconf->reason, xconf->oper_reason,
                   current_date, get_oper_name(source_p), cur_time);
    break;
#ifdef HAVE_LIBPCRE
  case RXLINE_TYPE:
    xconf = (struct MatchItem *)map_to_conf(conf);
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "%s added RX-Line for [%s] [%s]",
                         get_oper_name(source_p), conf->name,
                         xconf->reason);
    sendto_one(source_p,
               ":%s NOTICE %s :Added RX-Line [%s] [%s] to %s",
               from, to, conf->name,
               xconf->reason, filename);
    ilog(L_TRACE, "%s added X-Line for [%s] [%s]",
         get_oper_name(source_p), conf->name, xconf->reason);
    write_csv_line(out, "%s%s%s%s%s%d",
                   conf->name, xconf->reason, xconf->oper_reason,
                   current_date, get_oper_name(source_p), cur_time);
    break;
#endif
  case CRESV_TYPE:
    cresv_p = (struct ResvChannel *)map_to_conf(conf);

    write_csv_line(out, "%s%s",
                   cresv_p->name, cresv_p->reason);
    break;

  case NRESV_TYPE:
    nresv_p = (struct MatchItem *)map_to_conf(conf);

    write_csv_line(out, "%s%s",
                   conf->name, nresv_p->reason);
    break;

  default:
    fbclose(out);
    return;
  }

  fbclose(out);
}

/*
 * write_csv_line()
 *
 * inputs       - pointer to FBFILE *
 *              - formatted string
 * output       -
 * side effects - single line is written to csv conf file
 */
static int
write_csv_line(FBFILE *out, const char *format, ...)
{
  char c;
  size_t bytes = 0;
  va_list args;
  char tmp[1024];
  char *str = tmp;
  const char *null_string = "";

  if (out == NULL)
    return(0);

  va_start(args, format);

  while ((c = *format++))
  {
    if (c == '%')
    {
      c = *format++;
      if (c == 's')
      {
        const char *p1 = va_arg(args, const char *);
        if (p1 == NULL)
          p1 = null_string;
        *str++ = '\"';
        ++bytes;
        while (*p1 != '\0')
        {
          *str++ = *p1++;
          ++bytes;
        }
        *str++ = '\"';
        *str++ = ',';
          
        bytes += 2;
        continue;
      }
      if (c == 'c')
      {
        *str++ = '\"';
        ++bytes;
        *str++ = (char) va_arg(args, int);
        ++bytes;
        *str++ = '\"';
        *str++ = ',';

        bytes += 2;
        continue;
      }

      if (c == 'd')
      {
        int v = va_arg(args, int);
        char t[40];
        char *p=t;

        while (v > 10)
        {
          *p++ = (v % 10) + '0';
          v = v/10;
        }
        *p++ = (v % 10) + '0';

        *str++ = '\"';
        ++bytes;
        while (p != t)
        {
          *str++ = *--p;
          ++bytes;
        }

        *str++ = '\"';
        *str++ = ',';
        bytes += 2;
        continue;
      }
      if (c != '%')
      {
        int ret;
        
        format -= 2;
        ret = vsprintf(str, format, args);
        str += ret;
        bytes += ret;
        *str++ = ',';

        ++bytes;
        break;
      }
    }
    *str++ = c;
    ++bytes;
  }

  if (*(str-1) == ',')
  {
    *(str-1) = '\n';
    *str = '\0';
  }
  else
  {
    *str++ = '\n';
    ++bytes;
    *str = '\0';
  }

  va_end(args);
  str = tmp;
  fbputs(str, out, bytes);

  return(bytes);
}

/*
 * getfield
 *
 * inputs       - input buffer
 * output       - next field
 * side effects - field breakup for ircd.conf file.
 */
static char *
getfield(char *newline)
{
  static char *line = NULL;
  char *end, *field;
        
  if (newline != NULL)
    line = newline;

  if (line == NULL)
    return(NULL);

  field = line;

  /* skip everything that's not a starting quote */
  for(;;)
  {
    if (*field == '\0')
      return(NULL);
    else if (*field == '"')
      break;
    ++field;
  }

  /* skip over the beginning " */
  end = ++field;
  
  for (;;)
  {
    /* At end of string, mark it as end and return */
    if ((*end == '\0') || (*end == '\n'))
    {
      line = NULL;
      return(NULL);
    }
    else if (*end == '\\')      /* found escape character ? */
    {
      end++;
    }
    else if (*end == '"')       /* found terminating " */
    {
      *end++ = '\0';
      line = end;
      return(field);
    }

    end++;
  }

  return (NULL);
}

/* remove_conf_line()
 *
 * inputs       - type of kline to remove
 *              - pointer to oper removing
 *              - pat1 pat2 patterns to match
 * output       - -1 if unsuccessful 0 if no change 1 if change
 * side effects -
 */
int
remove_conf_line(ConfType type, struct Client *source_p, const char *pat1, const char *pat2)
{
  const char *filename;
  FBFILE *in, *out;
  int pairme=0;
  char buf[IRCD_BUFSIZE], buff[IRCD_BUFSIZE], temppath[IRCD_BUFSIZE];
  char *found1;
  char *found2;
  int oldumask;
  int (*cmpfunc)(const char *, const char *) = irccmp;

  if (type == RXLINE_TYPE || type == RKLINE_TYPE)
    cmpfunc = strcmp;

  filename = get_conf_name(type);

  if ((in = fbopen(filename, "r")) == NULL)
  {
    sendto_one(source_p, ":%s NOTICE %s :Cannot open %s", me.name,
               source_p->name, filename);
    return -1;
  }

  ircsprintf(temppath, "%s.tmp", filename);
  oldumask = umask(0);

  if ((out = fbopen(temppath, "w")) == NULL)
  {
    sendto_one(source_p, ":%s NOTICE %s :Cannot open %s", me.name,
               source_p->name, temppath);
    fbclose(in);
    umask(oldumask);
    return -1;
  }

  umask(oldumask);
  oldumask = umask(0);

  while (fbgets(buf, sizeof(buf), in) != NULL) 
  {
    if ((*buf == '\0') || (*buf == '#'))
    {
      if (flush_write(source_p, in, out, buf, temppath) < 0)
        return -1;
    }
    
    /* Keep copy of original line, getfield trashes line as it goes */
    strlcpy(buff, buf, sizeof(buff));

    if ((found1 = getfield(buff)) == NULL)
    {
      if (flush_write(source_p, in, out, buf, temppath) < 0)
        return -1;
      continue;
    }

    if (pat2 != NULL)
    {
      if ((found2 = getfield(NULL)) == NULL)
      {
        if (flush_write(source_p, in, out, buf, temppath) < 0)
          return -1;
        continue;
      }

      if (!cmpfunc(pat1, found1) && !cmpfunc(pat2, found2))
      {
        pairme = 1;
        continue;
      }
      else
      {
        if(flush_write(source_p, in, out, buf, temppath) < 0)
          return -1;
        continue;
      }
    }
    else
    {
      if (!cmpfunc(pat1, found1))
      {
        pairme = 1;
        continue;
      }
      else
      {
        if(flush_write(source_p, in, out, buf, temppath) < 0)
          return -1;
        continue;
      }
    }
  }

  fbclose(in);
  fbclose(out);

/* The result of the rename should be checked too... oh well */
/* If there was an error on a write above, then its been reported
 * and I am not going to trash the original kline /conf file
 */

  if (pairme == 0)
  {
    if(temppath != NULL)
      (void)unlink(temppath);
    return 0;
  }
  else
  {
    (void)rename(temppath, filename);

    /* XXX
     * This is a very inefficient way of removing a kline/xline etc.
     * This next function call forces a complete re-read of all conf
     * files, instead of a re-read of the kline/dline etc. files modified
     * But, consider how often an /quote unkline etc. is done compared
     * to how often a /quote kline is done. Its not a biggie in
     * the grand scheme of things. If it does become a biggie,
     * we will rewrite it - Dianora
     */

    rehash(0);
    return 1;
  }
}

/*
 * flush_write()
 *
 * inputs       - pointer to client structure of oper requesting unkline
 *              - in is the input file descriptor
 *              - out is the output file descriptor
 *              - buf is the buffer to write
 *              - ntowrite is the expected number of character to be written
 *              - temppath is the temporary file name to be written
 * output       - -1 for error on write
 *              - 0 for ok
 * side effects - if successful, the buf is written to output file
 *                if a write failure happesn, and the file pointed to
 *                by temppath, if its non NULL, is removed.
 *
 * The idea here is, to be as robust as possible when writing to the 
 * kline file.
 *
 * -Dianora
 */
static int
flush_write(struct Client *source_p, FBFILE *in, FBFILE* out, 
            const char *buf, const char *temppath)
{
  int error_on_write = (fbputs(buf, out, strlen(buf)) < 0) ? (-1) : (0);

  if (error_on_write)
  {
    sendto_one(source_p,":%s NOTICE %s :Unable to write to %s aborting",
               me.name, source_p->name, temppath);
    if(temppath != NULL)
      (void)unlink(temppath);
    fbclose(in);
    fbclose(out);
  }

  return (error_on_write);
}
1	/*
2	* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3	* csvlib.c - set of functions to deal with csv type of conf files
4	*
5	* Copyright (C) 2003 by Diane Bruce, Stuart Walsh
6	* Use it anywhere you like, if you like it buy us a beer.
7	* If it's broken, don't bother us with the lawyers.
8	*
9	* $Id$
10	*/
11
12	#include "config.h"
13	#ifdef HAVE_LIBPCRE
14	#include <pcre.h>
15	#endif
16	#include "stdinc.h"
17	#include "list.h"
18	#include "s_log.h"
19	#include "s_conf.h"
20	#include "hostmask.h"
21	#include "client.h"
22	#include "irc_string.h"
23	#include "sprintf_irc.h"
24	#include "memory.h"
25	#include "send.h"
26	#include "resv.h"
27	#include "s_serv.h"
28
29	/* Fix "statement not reached" warnings on Sun WorkShop C */
30	#ifdef __SUNPRO_C
31	# pragma error_messages(off, E_STATEMENT_NOT_REACHED)
32	#endif
33
34
35	static void parse_csv_line(char *, ...);
36	static int write_csv_line(FBFILE , const char , ...);
37	static int flush_write(struct Client , FBFILE , FBFILE *,
38	const char , const char );
39	static char getfield(char );
40
41	/* parse_csv_file()
42	*
43	* inputs - FILE pointer
44	* - type of conf to parse
45	* output - none
46	* side effects -
47	*/
48	void
49	parse_csv_file(FBFILE *file, ConfType conf_type)
50	{
51	struct ConfItem *conf;
52	struct AccessItem *aconf;
53	struct MatchItem *match_item;
54	char *name_field=NULL;
55	char *user_field=NULL;
56	char *reason_field=NULL;
57	char *oper_reason=NULL;
58	char *host_field=NULL;
59	char line[IRCD_BUFSIZE];
60	char *p;
61
62	while (fbgets(line, sizeof(line), file) != NULL)
63	{
64	if ((p = strchr(line, '\n')) != NULL)
65	*p = '\0';
66
67	if ((line[0] == '\0') \|\| (line[0] == '#'))
68	continue;
69
70	switch(conf_type)
71	{
72	case KLINE_TYPE:
73	parse_csv_line(line, &user_field, &host_field, &reason_field, NULL);
74	conf = make_conf_item(KLINE_TYPE);
75	aconf = map_to_conf(conf);
76
77	if (host_field != NULL)
78	DupString(aconf->host, host_field);
79	if (reason_field != NULL)
80	DupString(aconf->reason, reason_field);
81	if (user_field != NULL)
82	DupString(aconf->user, user_field);
83	if (aconf->host != NULL)
84	add_conf_by_address(CONF_KILL, aconf);
85	break;
86	#ifdef HAVE_LIBPCRE
87	case RKLINE_TYPE:
88	{
89	const char *errptr = NULL;
90	pcre exp_user = NULL, exp_host = NULL;
91
92	parse_csv_line(line, &user_field, &host_field, &reason_field, NULL);
93
94	if (host_field == NULL \|\| user_field == NULL)
95	break;
96
97	if (!(exp_user = ircd_pcre_compile(user_field, &errptr)) \|\|
98	!(exp_host = ircd_pcre_compile(host_field, &errptr)))
99	{
100	sendto_realops_flags(UMODE_ALL, L_ALL,
101	"Failed to add regular expression based K-Line: %s", errptr);
102	break;
103	}
104
105	aconf = map_to_conf(make_conf_item(RKLINE_TYPE));
106
107	aconf->regexuser = exp_user;
108	aconf->regexhost = exp_host;
109
110	DupString(aconf->user, user_field);
111	DupString(aconf->host, host_field);
112
113	if (reason_field != NULL)
114	DupString(aconf->reason, reason_field);
115	else
116	DupString(aconf->reason, "No reason");
117
118	}
119	break;
120	#endif
121	case DLINE_TYPE:
122	parse_csv_line(line, &host_field, &reason_field, NULL);
123
124	if (host_field && parse_netmask(host_field, NULL, NULL) != HM_HOST)
125	{
126	aconf = map_to_conf(make_conf_item(DLINE_TYPE));
127	DupString(aconf->host, host_field);
128
129	if (reason_field != NULL)
130	DupString(aconf->reason, reason_field);
131	else
132	DupString(aconf->reason, "No reason");
133	add_conf_by_address(CONF_DLINE, aconf);
134	}
135
136	break;
137
138	case XLINE_TYPE:
139	parse_csv_line(line, &name_field, &reason_field, &oper_reason, NULL);
140	conf = make_conf_item(XLINE_TYPE);
141	match_item = (struct MatchItem *)map_to_conf(conf);
142	if (name_field != NULL)
143	DupString(conf->name, name_field);
144	if (reason_field != NULL)
145	DupString(match_item->reason, reason_field);
146	break;
147	#ifdef HAVE_LIBPCRE
148	case RXLINE_TYPE:
149	{
150	const char *errptr = NULL;
151	pcre *exp_p = NULL;
152
153	parse_csv_line(line, &name_field, &reason_field, &oper_reason, NULL);
154
155	if (name_field == NULL)
156	break;
157
158	if (!(exp_p = ircd_pcre_compile(name_field, &errptr)))
159	{
160	sendto_realops_flags(UMODE_ALL, L_ALL,
161	"Failed to add regular expression based X-Line: %s", errptr);
162	break;
163	}
164
165	conf = make_conf_item(RXLINE_TYPE);
166	conf->regexpname = exp_p;
167	match_item = map_to_conf(conf);
168	DupString(conf->name, name_field);
169
170	if (reason_field != NULL)
171	DupString(match_item->reason, reason_field);
172	else
173	DupString(match_item->reason, "No reason");
174	}
175	break;
176	#endif
177	case CRESV_TYPE:
178	parse_csv_line(line, &name_field, &reason_field, NULL);
179	(void)create_channel_resv(name_field, reason_field, 0);
180	break;
181
182	case NRESV_TYPE:
183	parse_csv_line(line, &name_field, &reason_field, NULL);
184	(void)create_nick_resv(name_field, reason_field, 0);
185	break;
186
187	case GLINE_TYPE:
188	case GDENY_TYPE:
189	case CONF_TYPE:
190	case OPER_TYPE:
191	case CLIENT_TYPE:
192	case SERVER_TYPE:
193	case CLUSTER_TYPE:
194	case HUB_TYPE:
195	case LEAF_TYPE:
196	case ULINE_TYPE:
197	case EXEMPTDLINE_TYPE:
198	case CLASS_TYPE:
199	default:
200	break;
201	}
202	}
203	}
204
205	/*
206	* parse_csv_line()
207	*
208	* inputs - pointer to line to parse
209	* output -
210	* side effects -
211	*/
212
213	static void
214	parse_csv_line(char *line, ...)
215	{
216	va_list args;
217	char **dest;
218	char *field = NULL;
219
220	va_start(args, line);
221
222	for (; ;)
223	{
224	dest = va_arg(args, char **);
225	if ((dest == NULL) \|\| ((field = getfield(field ? NULL : line)) == NULL))
226	{
227	va_end(args);
228	return;
229	}
230	*dest = field;
231	}
232	}
233
234	/* write_conf_line()
235	*
236	* inputs - pointer to struct AccessItem
237	* - string current_date (small date)
238	* - time_t cur_time
239	* output - NONE
240	* side effects - This function takes care of
241	* finding right conf file, writing
242	* the right lines to this file,
243	* notifying the oper that their kline/dline etc. is in place
244	* notifying the opers on the server about the k/d etc. line
245	*
246	* - Dianora
247	*/
248	void
249	write_conf_line(struct Client source_p, struct ConfItem conf,
250	const char *current_date, time_t cur_time)
251	{
252	FBFILE *out;
253	const char filename, from, *to;
254	struct AccessItem *aconf;
255	struct MatchItem *xconf;
256	struct ResvChannel *cresv_p=NULL;
257	struct MatchItem *nresv_p=NULL;
258	ConfType type;
259
260	type = conf->type;
261	filename = get_conf_name(type);
262
263	if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
264	{
265	from = me.id;
266	to = source_p->id;
267	}
268	else
269	{
270	from = me.name;
271	to = source_p->name;
272	}
273
274	if ((out = fbopen(filename, "a")) == NULL)
275	{
276	sendto_realops_flags(UMODE_ALL, L_ALL,
277	"*** Problem opening %s ", filename);
278	return;
279	}
280
281	switch(type)
282	{
283	case KLINE_TYPE:
284	aconf = (struct AccessItem *)map_to_conf(conf);
285	sendto_realops_flags(UMODE_ALL, L_ALL,
286	"%s added K-Line for [%s@%s] [%s]",
287	get_oper_name(source_p),
288	aconf->user, aconf->host, aconf->reason);
289	sendto_one(source_p, ":%s NOTICE %s :Added K-Line [%s@%s]",
290	from, to, aconf->user, aconf->host);
291	ilog(L_TRACE, "%s added K-Line for [%s@%s] [%s]",
292	source_p->name, aconf->user, aconf->host, aconf->reason);
293	log_oper_action(LOG_KLINE_TYPE, source_p, "[%s@%s] [%s]\n",
294	aconf->user, aconf->host, aconf->reason);
295	write_csv_line(out, "%s%s%s%s%s%s%d",
296	aconf->user, aconf->host,
297	aconf->reason, aconf->oper_reason, current_date,
298	get_oper_name(source_p), cur_time);
299	break;
300	#ifdef HAVE_LIBPCRE
301	case RKLINE_TYPE:
302	aconf = map_to_conf(conf);
303	sendto_realops_flags(UMODE_ALL, L_ALL,
304	"%s added RK-Line for [%s@%s] [%s]",
305	get_oper_name(source_p),
306	aconf->user, aconf->host, aconf->reason);
307	sendto_one(source_p, ":%s NOTICE %s :Added RK-Line [%s@%s]",
308	from, to, aconf->user, aconf->host);
309	ilog(L_TRACE, "%s added K-Line for [%s@%s] [%s]",
310	source_p->name, aconf->user, aconf->host, aconf->reason);
311	log_oper_action(LOG_RKLINE_TYPE, source_p, "[%s@%s] [%s]\n",
312	aconf->user, aconf->host, aconf->reason);
313	write_csv_line(out, "%s%s%s%s%s%s%d",
314	aconf->user, aconf->host,
315	aconf->reason, aconf->oper_reason, current_date,
316	get_oper_name(source_p), cur_time);
317	break;
318	#endif
319	case DLINE_TYPE:
320	aconf = (struct AccessItem *)map_to_conf(conf);
321	sendto_realops_flags(UMODE_ALL, L_ALL,
322	"%s added D-Line for [%s] [%s]",
323	get_oper_name(source_p), aconf->host, aconf->reason);
324	sendto_one(source_p, ":%s NOTICE %s :Added D-Line [%s] to %s",
325	from, to, aconf->host, filename);
326	ilog(L_TRACE, "%s added D-Line for [%s] [%s]",
327	get_oper_name(source_p), aconf->host, aconf->reason);
328	log_oper_action(LOG_DLINE_TYPE, source_p, "[%s] [%s]\n",
329	aconf->host, aconf->reason);
330	write_csv_line(out, "%s%s%s%s%s%d",
331	aconf->host, aconf->reason, aconf->oper_reason,
332	current_date,
333	get_oper_name(source_p), cur_time);
334	break;
335
336	case XLINE_TYPE:
337	xconf = (struct MatchItem *)map_to_conf(conf);
338	sendto_realops_flags(UMODE_ALL, L_ALL,
339	"%s added X-Line for [%s] [%s]",
340	get_oper_name(source_p), conf->name,
341	xconf->reason);
342	sendto_one(source_p,
343	":%s NOTICE %s :Added X-Line [%s] [%d] [%s] to %s",
344	from, to, conf->name,
345	xconf->action, xconf->reason, filename);
346	ilog(L_TRACE, "%s added X-Line for [%s] [%s]",
347	get_oper_name(source_p), conf->name, xconf->reason);
348	write_csv_line(out, "%s%s%s%s%s%d",
349	conf->name, xconf->reason, xconf->oper_reason,
350	current_date, get_oper_name(source_p), cur_time);
351	break;
352	#ifdef HAVE_LIBPCRE
353	case RXLINE_TYPE:
354	xconf = (struct MatchItem *)map_to_conf(conf);
355	sendto_realops_flags(UMODE_ALL, L_ALL,
356	"%s added RX-Line for [%s] [%s]",
357	get_oper_name(source_p), conf->name,
358	xconf->reason);
359	sendto_one(source_p,
360	":%s NOTICE %s :Added RX-Line [%s] [%s] to %s",
361	from, to, conf->name,
362	xconf->reason, filename);
363	ilog(L_TRACE, "%s added X-Line for [%s] [%s]",
364	get_oper_name(source_p), conf->name, xconf->reason);
365	write_csv_line(out, "%s%s%s%s%s%d",
366	conf->name, xconf->reason, xconf->oper_reason,
367	current_date, get_oper_name(source_p), cur_time);
368	break;
369	#endif
370	case CRESV_TYPE:
371	cresv_p = (struct ResvChannel *)map_to_conf(conf);
372
373	write_csv_line(out, "%s%s",
374	cresv_p->name, cresv_p->reason);
375	break;
376
377	case NRESV_TYPE:
378	nresv_p = (struct MatchItem *)map_to_conf(conf);
379
380	write_csv_line(out, "%s%s",
381	conf->name, nresv_p->reason);
382	break;
383
384	default:
385	fbclose(out);
386	return;
387	}
388
389	fbclose(out);
390	}
391
392	/*
393	* write_csv_line()
394	*
395	* inputs - pointer to FBFILE *
396	* - formatted string
397	* output -
398	* side effects - single line is written to csv conf file
399	*/
400	static int
401	write_csv_line(FBFILE out, const char format, ...)
402	{
403	char c;
404	size_t bytes = 0;
405	va_list args;
406	char tmp[1024];
407	char *str = tmp;
408	const char *null_string = "";
409
410	if (out == NULL)
411	return(0);
412
413	va_start(args, format);
414
415	while ((c = *format++))
416	{
417	if (c == '%')
418	{
419	c = *format++;
420	if (c == 's')
421	{
422	const char p1 = va_arg(args, const char );
423	if (p1 == NULL)
424	p1 = null_string;
425	*str++ = '\"';
426	++bytes;
427	while (*p1 != '\0')
428	{
429	str++ = p1++;
430	++bytes;
431	}
432	*str++ = '\"';
433	*str++ = ',';
434
435	bytes += 2;
436	continue;
437	}
438	if (c == 'c')
439	{
440	*str++ = '\"';
441	++bytes;
442	*str++ = (char) va_arg(args, int);
443	++bytes;
444	*str++ = '\"';
445	*str++ = ',';
446
447	bytes += 2;
448	continue;
449	}
450
451	if (c == 'd')
452	{
453	int v = va_arg(args, int);
454	char t[40];
455	char *p=t;
456
457	while (v > 10)
458	{
459	*p++ = (v % 10) + '0';
460	v = v/10;
461	}
462	*p++ = (v % 10) + '0';
463
464	*str++ = '\"';
465	++bytes;
466	while (p != t)
467	{
468	str++ = --p;
469	++bytes;
470	}
471
472	*str++ = '\"';
473	*str++ = ',';
474	bytes += 2;
475	continue;
476	}
477	if (c != '%')
478	{
479	int ret;
480
481	format -= 2;
482	ret = vsprintf(str, format, args);
483	str += ret;
484	bytes += ret;
485	*str++ = ',';
486
487	++bytes;
488	break;
489	}
490	}
491	*str++ = c;
492	++bytes;
493	}
494
495	if (*(str-1) == ',')
496	{
497	*(str-1) = '\n';
498	*str = '\0';
499	}
500	else
501	{
502	*str++ = '\n';
503	++bytes;
504	*str = '\0';
505	}
506
507	va_end(args);
508	str = tmp;
509	fbputs(str, out, bytes);
510
511	return(bytes);
512	}
513
514	/*
515	* getfield
516	*
517	* inputs - input buffer
518	* output - next field
519	* side effects - field breakup for ircd.conf file.
520	*/
521	static char *
522	getfield(char *newline)
523	{
524	static char *line = NULL;
525	char end, field;
526
527	if (newline != NULL)
528	line = newline;
529
530	if (line == NULL)
531	return(NULL);
532
533	field = line;
534
535	/* skip everything that's not a starting quote */
536	for(;;)
537	{
538	if (*field == '\0')
539	return(NULL);
540	else if (*field == '"')
541	break;
542	++field;
543	}
544
545	/* skip over the beginning " */
546	end = ++field;
547
548	for (;;)
549	{
550	/* At end of string, mark it as end and return */
551	if ((end == '\0') \|\| (end == '\n'))
552	{
553	line = NULL;
554	return(NULL);
555	}
556	else if (end == '\\') / found escape character ? */
557	{
558	end++;
559	}
560	else if (end == '"') / found terminating " */
561	{
562	*end++ = '\0';
563	line = end;
564	return(field);
565	}
566
567	end++;
568	}
569
570	return (NULL);
571	}
572
573	/* remove_conf_line()
574	*
575	* inputs - type of kline to remove
576	* - pointer to oper removing
577	* - pat1 pat2 patterns to match
578	* output - -1 if unsuccessful 0 if no change 1 if change
579	* side effects -
580	*/
581	int
582	remove_conf_line(ConfType type, struct Client source_p, const char pat1, const char *pat2)
583	{
584	const char *filename;
585	FBFILE in, out;
586	int pairme=0;
587	char buf[IRCD_BUFSIZE], buff[IRCD_BUFSIZE], temppath[IRCD_BUFSIZE];
588	char *found1;
589	char *found2;
590	int oldumask;
591	int (cmpfunc)(const char , const char *) = irccmp;
592
593	if (type == RXLINE_TYPE \|\| type == RKLINE_TYPE)
594	cmpfunc = strcmp;
595
596	filename = get_conf_name(type);
597
598	if ((in = fbopen(filename, "r")) == NULL)
599	{
600	sendto_one(source_p, ":%s NOTICE %s :Cannot open %s", me.name,
601	source_p->name, filename);
602	return -1;
603	}
604
605	ircsprintf(temppath, "%s.tmp", filename);
606	oldumask = umask(0);
607
608	if ((out = fbopen(temppath, "w")) == NULL)
609	{
610	sendto_one(source_p, ":%s NOTICE %s :Cannot open %s", me.name,
611	source_p->name, temppath);
612	fbclose(in);
613	umask(oldumask);
614	return -1;
615	}
616
617	umask(oldumask);
618	oldumask = umask(0);
619
620	while (fbgets(buf, sizeof(buf), in) != NULL)
621	{
622	if ((buf == '\0') \|\| (buf == '#'))
623	{
624	if (flush_write(source_p, in, out, buf, temppath) < 0)
625	return -1;
626	}
627
628	/* Keep copy of original line, getfield trashes line as it goes */
629	strlcpy(buff, buf, sizeof(buff));
630
631	if ((found1 = getfield(buff)) == NULL)
632	{
633	if (flush_write(source_p, in, out, buf, temppath) < 0)
634	return -1;
635	continue;
636	}
637
638	if (pat2 != NULL)
639	{
640	if ((found2 = getfield(NULL)) == NULL)
641	{
642	if (flush_write(source_p, in, out, buf, temppath) < 0)
643	return -1;
644	continue;
645	}
646
647	if (!cmpfunc(pat1, found1) && !cmpfunc(pat2, found2))
648	{
649	pairme = 1;
650	continue;
651	}
652	else
653	{
654	if(flush_write(source_p, in, out, buf, temppath) < 0)
655	return -1;
656	continue;
657	}
658	}
659	else
660	{
661	if (!cmpfunc(pat1, found1))
662	{
663	pairme = 1;
664	continue;
665	}
666	else
667	{
668	if(flush_write(source_p, in, out, buf, temppath) < 0)
669	return -1;
670	continue;
671	}
672	}
673	}
674
675	fbclose(in);
676	fbclose(out);
677
678	/* The result of the rename should be checked too... oh well */
679	/* If there was an error on a write above, then its been reported
680	* and I am not going to trash the original kline /conf file
681	*/
682
683	if (pairme == 0)
684	{
685	if(temppath != NULL)
686	(void)unlink(temppath);
687	return 0;
688	}
689	else
690	{
691	(void)rename(temppath, filename);
692
693	/* XXX
694	* This is a very inefficient way of removing a kline/xline etc.
695	* This next function call forces a complete re-read of all conf
696	* files, instead of a re-read of the kline/dline etc. files modified
697	* But, consider how often an /quote unkline etc. is done compared
698	* to how often a /quote kline is done. Its not a biggie in
699	* the grand scheme of things. If it does become a biggie,
700	* we will rewrite it - Dianora
701	*/
702
703	rehash(0);
704	return 1;
705	}
706	}
707
708	/*
709	* flush_write()
710	*
711	* inputs - pointer to client structure of oper requesting unkline
712	* - in is the input file descriptor
713	* - out is the output file descriptor
714	* - buf is the buffer to write
715	* - ntowrite is the expected number of character to be written
716	* - temppath is the temporary file name to be written
717	* output - -1 for error on write
718	* - 0 for ok
719	* side effects - if successful, the buf is written to output file
720	* if a write failure happesn, and the file pointed to
721	* by temppath, if its non NULL, is removed.
722	*
723	* The idea here is, to be as robust as possible when writing to the
724	* kline file.
725	*
726	* -Dianora
727	*/
728	static int
729	flush_write(struct Client source_p, FBFILE in, FBFILE* out,
730	const char buf, const char temppath)
731	{
732	int error_on_write = (fbputs(buf, out, strlen(buf)) < 0) ? (-1) : (0);
733
734	if (error_on_write)
735	{
736	sendto_one(source_p,":%s NOTICE %s :Unable to write to %s aborting",
737	me.name, source_p->name, temppath);
738	if(temppath != NULL)
739	(void)unlink(temppath);
740	fbclose(in);
741	fbclose(out);
742	}
743
744	return (error_on_write);
745	}
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