ermyth/src/function.C

/*
 * function.C: Miscellaneous functions.
 * Rights to this code are documented in doc/pod/license.pod.
 *
 * Copyright © 2005-2007 Atheme Project (http://www.atheme.org)           
 */

static char const rcsid[] = "$Id: function.C,v 1.5 2007-08-30 19:56:25 pippijn Exp $";

#include "atheme.h"
#include <ermyth/crypto.h>
#include <account/mychan.h>
#include <account/chanacs.h>
#include <account/myuser.h>
#include <common/random.h>

char ch[27] = "abcdefghijklmnopqrstuvwxyz";

/* This function uses allocates memory.
 * You MUST free the result when you are done with it!
 */
char *
gen_pw (int sz)
{
  int i;
  char *buf = salloc<char> (sz + 1);    /* padding */

  for (i = 0; i < sz; i++)
    {
      buf[i] = ch[gen_rand32 () % 26];
    }

  buf[sz] = 0;

  return buf;
}

#ifdef HAVE_GETTIMEOFDAY
/* starts a timer */
void
s_time (struct timeval *sttime)
{
  gettimeofday (sttime, NULL);
}
#endif

#ifdef HAVE_GETTIMEOFDAY
/* ends a timer */
void
e_time (struct timeval sttime, struct timeval *ttime)
{
  struct timeval now;

  gettimeofday (&now, NULL);
  timersub (&now, &sttime, ttime);
}
#endif

#ifdef HAVE_GETTIMEOFDAY
/* translates microseconds into miliseconds */
int
tv2ms (struct timeval *tv)
{
  return (tv->tv_sec * 1000) + (int) (tv->tv_usec / 1000);
}
#endif

/* replaces tabs with a single ASCII 32 */
void
tb2sp (char *line)
{
  char *c;

  while ((c = strchr (line, '\t')))
    *c = ' ';
}

/* replace all occurances of 'oldstr' with 'newstr' */
char *
replace (char *s, int size, char const * const oldstr, char const * const newstr)
{
  char *ptr = s;
  int left = strlen (s);
  int avail = size - (left + 1);
  int oldstrlen = strlen (oldstr);
  int newstrlen = strlen (newstr);
  int diff = newstrlen - oldstrlen;

  while (left >= oldstrlen)
    {
      if (strncmp (ptr, oldstr, oldstrlen))
        {
          left--;
          ptr++;
          continue;
        }

      if (diff > avail)
        break;

      if (diff != 0)
        memmove (ptr + oldstrlen + diff, ptr + oldstrlen, left + 1);

      memcpy (ptr, newstr, newstrlen);
      ptr += newstrlen;
      left -= oldstrlen;
    }

  return s;
}

/* reverse of atoi() */
char *
itoa (int num)
{
  static char ret[32];
  sprintf (ret, "%d", num);
  return ret;
}

/* return the time elapsed since an event */
char *
time_ago (time_t event)
{
  static char ret[128];
  int years, weeks, days, hours, minutes, seconds;

  event = NOW - event;
  years = weeks = days = hours = minutes = seconds = 0;

  while (event >= 60 * 60 * 24 * 365)
    {
      event -= 60 * 60 * 24 * 365;
      years++;
    }
  while (event >= 60 * 60 * 24 * 7)
    {
      event -= 60 * 60 * 24 * 7;
      weeks++;
    }
  while (event >= 60 * 60 * 24)
    {
      event -= 60 * 60 * 24;
      days++;
    }
  while (event >= 60 * 60)
    {
      event -= 60 * 60;
      hours++;
    }
  while (event >= 60)
    {
      event -= 60;
      minutes++;
    }

  seconds = event;

  if (years)
    snprintf (ret, sizeof (ret), "%d year%s, %d week%s, %d day%s, %02d:%02d:%02d", years, years == 1 ? "" : "s", weeks, weeks == 1 ? "" : "s", days, days == 1 ? "" : "s", hours, minutes, seconds);
  else if (weeks)
    snprintf (ret, sizeof (ret), "%d week%s, %d day%s, %02d:%02d:%02d", weeks, weeks == 1 ? "" : "s", days, days == 1 ? "" : "s", hours, minutes, seconds);
  else if (days)
    snprintf (ret, sizeof (ret), "%d day%s, %02d:%02d:%02d", days, days == 1 ? "" : "s", hours, minutes, seconds);
  else if (hours)
    snprintf (ret, sizeof (ret), "%d hour%s, %d minute%s, %d second%s", hours, hours == 1 ? "" : "s", minutes, minutes == 1 ? "" : "s", seconds, seconds == 1 ? "" : "s");
  else if (minutes)
    snprintf (ret, sizeof (ret), "%d minute%s, %d second%s", minutes, minutes == 1 ? "" : "s", seconds, seconds == 1 ? "" : "s");
  else
    snprintf (ret, sizeof (ret), "%d second%s", seconds, seconds == 1 ? "" : "s");

  return ret;
}

char *
timediff (time_t seconds)
{
  static char buf[BUFSIZE];
  long unsigned days, hours, minutes;

  days = seconds / 86400;
  seconds %= 86400;
  hours = seconds / 3600;
  hours %= 3600;
  minutes = seconds / 60;
  minutes %= 60;
  seconds %= 60;

  snprintf (buf, sizeof (buf), "%lu day%s, %lu:%02lu:%02lu", days, (days == 1) ? "" : "s", hours, minutes, (long unsigned) seconds);

  return buf;
}

/* generate a random number, for use as a key */
unsigned long
makekey (void)
{
  unsigned long k;

  k = gen_rand32 () & 0x7FFFFFFF;

  /* shorten or pad it to 9 digits */
  if (k > 1000000000)
    k = k - 1000000000;
  if (k < 100000000)
    k = k + 100000000;

  return k;
}

bool
is_internal_client (user_t *u)
{
  return (u && (!u->server || u->server == me.me));
}

int
validemail (char *email)
{
  int i, valid = 1, chars = 0;

  /* sane length */
  if (strlen (email) >= EMAILLEN)
    valid = 0;

  /* make sure it has @ and . */
  if (!strchr (email, '@') || !strchr (email, '.'))
    valid = 0;

  /* check for other bad things */
  if (strchr (email, '\'') || strchr (email, ' ') || strchr (email, ',') || strchr (email, '$') || strchr (email, '/') || strchr (email, ';') || strchr (email, '<') || strchr (email, '>') || strchr (email, '&') || strchr (email, '"'))
    valid = 0;

  /* make sure there are at least 6 characters besides the above
   * mentioned @ and .
   */
  for (i = strlen (email) - 1; i > 0; i--)
    if (!(email[i] == '@' || email[i] == '.'))
      chars++;

  if (chars < 6)
    valid = 0;

  return valid;
}

bool
validhostmask (char *host)
{
  char *p, *q;

  if (strchr (host, ' '))
    return false;

  /* make sure it has ! and @ in that order and only once */
  p = strchr (host, '!');
  q = strchr (host, '@');
  if (p == NULL || q == NULL || p > q || strchr (p + 1, '!') || strchr (q + 1, '@'))
    return false;

  /* XXX this NICKLEN is too long */
  if (strlen (host) > NICKLEN + USERLEN + HOSTLEN + 1)
    return false;

  if (host[0] == ',' || host[0] == '-' || host[0] == '#' || host[0] == '@' || host[0] == '!')
    return false;

  return true;
}

/* send the specified type of email.
 *
 * u is whoever caused this to be called, the corresponding service
 *   in case of xmlrpc
 * type is EMAIL_*, see include/tools.h
 * mu is the recipient user
 * param depends on type, also see include/tools.h
 */
int
sendemail (user_t *u, int type, myuser_t *mu, char const * const param)
{
  char *email, *date = NULL;
  char cmdbuf[512], timebuf[256], to[128], from[128], subject[128];
  FILE *out;
  time_t t;
  struct tm tm;
  int pipfds[2];
  pid_t pid;
  int status;
  int rc;
  static time_t period_start = 0, lastwallops = 0;
  static unsigned emailcount = 0;

  if (u == NULL || mu == NULL)
    return 0;

  if (me.mta == NULL)
    {
      if (type != EMAIL_MEMO && !is_internal_client (u))
        notice (opersvs.me ? opersvs.nick : me.name, u->nick, "Sending email is administratively disabled.");
      return 0;
    }

  if (type == EMAIL_SETEMAIL)
    {
      /* special case for e-mail change */
      metadata *md = mu->find_metadata ("private:verify:emailchg:newemail");

      if (md && md->value)
        email = md->value;
      else                      /* should NEVER happen */
        {
          slog (LG_ERROR, "sendemail(): got email change request, but newemail unset!");
          return 0;
        }
    }
  else
    email = mu->email;

  if (NOW - period_start > me.emailtime)
    {
      emailcount = 0;
      period_start = NOW;
    }
  emailcount++;
  if (emailcount > me.emaillimit)
    {
      if (NOW - lastwallops > 60)
        {
          wallops (_("Rejecting email for %s[%s@%s] due to too high load (type %d to %s <%s>)"), u->nick, u->user, u->vhost, type, mu->name, email);
          slog (LG_ERROR, "sendemail(): rejecting email for %s[%s@%s] (%s) due to too high load (type %d to %s <%s>)", u->nick, u->user, u->vhost, u->ip[0] ? u->ip : u->host, type, mu->name, email);
          lastwallops = NOW;
        }
      return 0;
    }

  slog (LG_INFO, "sendemail(): email for %s[%s@%s] (%s) type %d to %s <%s>", u->nick, u->user, u->vhost, u->ip[0] ? u->ip : u->host, type, mu->name, email);

  /* set up the email headers */
  time (&t);
  tm = *gmtime (&t);
  strftime (timebuf, sizeof (timebuf) - 1, "%a, %d %b %Y %H:%M:%S +0000", &tm);

  date = timebuf;

  snprintf (from, sizeof from, "%s automailer <noreply.%s>", me.netname, me.adminemail);
  snprintf (to, sizeof to, "%s <%s>", mu->name, email);

  strlcpy (subject, me.netname, sizeof subject);
  strlcat (subject, " ", sizeof subject);
  if (type == EMAIL_REGISTER)
    if (nicksvs.no_nick_ownership)
      strlcat (subject, "Account Registration", sizeof subject);
    else
      strlcat (subject, "Nickname Registration", sizeof subject);
  else if (type == EMAIL_SENDPASS || type == EMAIL_SETPASS)
    strlcat (subject, "Password Retrieval", sizeof subject);
  else if (type == EMAIL_SETEMAIL)
    strlcat (subject, "Change Email Confirmation", sizeof subject);
  else if (type == EMAIL_MEMO)
    strlcat (subject, "New memo", sizeof subject);

  /* now set up the email */
  sprintf (cmdbuf, "%s %s", me.mta, email);
  if (pipe (pipfds) < 0)
    return 0;
  switch (pid = fork ())
    {
    case -1:
      return 0;
    case 0:
      close (pipfds[1]);
      dup2 (pipfds[0], 0);
      switch (fork ())
        {
          /* fork again to avoid zombies -- jilles */
        case -1:
          _exit (255);
        case 0:
          execl ("/bin/sh", "sh", "-c", cmdbuf, NULL);
          _exit (255);
        default:
          _exit (0);
        }
    }
  close (pipfds[0]);
  waitpid (pid, &status, 0);
  out = fdopen (pipfds[1], "w");

  fprintf (out, "From: %s\n", from);
  fprintf (out, "To: %s\n", to);
  fprintf (out, "Subject: %s\n", subject);
  fprintf (out, "Date: %s\n\n", date);

  fprintf (out, "%s,\n\n", mu->name);

  if (type == EMAIL_REGISTER)
    {
      fprintf (out, "In order to complete your registration, you must send the following\ncommand on IRC:\n");
      fprintf (out, "/MSG %s VERIFY REGISTER %s %s\n\n", nicksvs.nick, mu->name, param);
      fprintf (out, "Thank you for registering your %s on the %s IRC " "network!\n\n", (nicksvs.no_nick_ownership ? "account" : "nickname"), me.netname);
    }
  else if (type == EMAIL_SENDPASS)
    {
      fprintf (out, "Someone has requested the password for %s be sent to the\n" "corresponding email address. If you did not request this action\n" "please let us know.\n\n", mu->name);
      fprintf (out, "The password for %s is %s. Please write this down for " "future reference.\n\n", mu->name, param);
    }
  else if (type == EMAIL_SETEMAIL)
    {
      fprintf (out, "In order to complete your email change, you must send\n" "the following command on IRC:\n");
      fprintf (out, "/MSG %s VERIFY EMAILCHG %s %s\n\n", nicksvs.nick, mu->name, param);
    }
  else if (type == EMAIL_MEMO)
    {
      if (u->myuser != NULL)
        fprintf (out, "You have a new memo from %s.\n\n", u->myuser->name);
      else
        /* shouldn't happen */
        fprintf (out, "You have a new memo from %s (unregistered?).\n\n", u->nick);
      fprintf (out, "%s\n\n", param);
    }
  else if (type == EMAIL_SETPASS)
    {
      fprintf (out, "In order to set a new password, you must send\n" "the following command on IRC:\n");
      fprintf (out, "/MSG %s SETPASS %s %s <password>\nwhere <password> is your desired new password.\n\n", nicksvs.nick, mu->name, param);
    }

  fprintf (out, "Thank you for your interest in the %s IRC network.\n", me.netname);
  if (u->server != me.me)
    fprintf (out, "\nThis email was sent due to a command from %s[%s@%s]\nat %s.\n", u->nick, u->user, u->vhost, date);
  fprintf (out, "If this message is spam, please contact %s\nwith a full copy.\n", me.adminemail);
  fprintf (out, ".\n");
  rc = 1;
  if (ferror (out))
    rc = 0;
  if (fclose (out) < 0)
    rc = 0;
  if (rc == 0)
    slog (LG_ERROR, "sendemail(): mta failure");
  return rc;
}

/* various access level checkers */
bool
myuser_t::is_founder (mychan_t *mc) const
{
  if (chanacs_find (mc, this, CA_FOUNDER))
    return true;

  return false;
}

bool
myuser_t::should_owner (mychan_t *mc) const
{
  if (MC_NOOP & mc->flags)
    return false;

  if (MU_NOOP & flags)
    return false;

  if (is_founder (mc))
    return true;

  return false;
}

bool
myuser_t::should_protect (mychan_t *mc) const
{
  if (MC_NOOP & mc->flags)
    return false;

  if (MU_NOOP & flags)
    return false;

  if (chanacs_find (mc, this, CA_SET))
    return true;

  return false;
}

bool
is_ircop (user_t *user)
{
  if (UF_IRCOP & user->flags)
    return true;

  return false;
}

bool
is_admin (user_t *user)
{
  if (UF_ADMIN & user->flags)
    return true;

  return false;
}

void
myuser_t::set_password (char const * const newpassword)
{
  if (newpassword == NULL)
    return;

  /* if we can, try to crypt it */
  if (crypto::handler::loaded)
    {
      flags |= MU_CRYPTPASS;
      strlcpy (pass, crypter->crypt (newpassword, crypto::gen_salt ()), NICKLEN);
    }
  else
    {
      flags &= ~MU_CRYPTPASS;   /* just in case */
      strlcpy (pass, newpassword, NICKLEN);
    }
}

bool
myuser_t::verify_password (char const * const password) const
{
  if (password == NULL)
    return false;

  if (flags & MU_CRYPTPASS)
    if (crypto::handler::loaded)
      return crypto::verify_password (password, pass);
    else
      {                         /* not good! */
        slog (LG_ERROR, "check_password(): can't check crypted password -- no crypto module!");
        return false;
      }
  else
    return (strcmp (pass, password) == 0);
}

char const *
sbytes (float x)
{
  if (x > 1073741824.0)
    return "GB";

  else if (x > 1048576.0)
    return "MB";

  else if (x > 1024.0)
    return "KB";

  return "B";
}

float
bytes (float x)
{
  if (x > 1073741824.0)
    return (x / 1073741824.0);

  if (x > 1048576.0)
    return (x / 1048576.0);

  if (x > 1024.0)
    return (x / 1024.0);

  return x;
}
Revision:	1.6
Committed:	Wed Sep 5 11:23:15 2007 UTC (16 years, 10 months ago) by pippijn
Content type:	text/plain
Branch:	MAIN
Changes since 1.5:	+2 -2 lines
Log Message:	removed GPLed code and put license back to BSD
#	User	Rev	Content
1	pippijn	1.1	/*
2			* function.C: Miscellaneous functions.
3	pippijn	1.2	* Rights to this code are documented in doc/pod/license.pod.
4	pippijn	1.1	*
5	pippijn	1.4	* Copyright © 2005-2007 Atheme Project (http://www.atheme.org)
6	pippijn	1.1	*/
7
8	pippijn	1.6	static char const rcsid[] = "$Id: function.C,v 1.5 2007-08-30 19:56:25 pippijn Exp $";
9	pippijn	1.1
10			#include "atheme.h"
11	pippijn	1.4	#include <ermyth/crypto.h>
12	pippijn	1.1	#include <account/mychan.h>
13			#include <account/chanacs.h>
14			#include <account/myuser.h>
15	pippijn	1.4	#include <common/random.h>
16	pippijn	1.1
17			char ch[27] = "abcdefghijklmnopqrstuvwxyz";
18
19	pippijn	1.4	/* This function uses allocates memory.
20	pippijn	1.1	* You MUST free the result when you are done with it!
21			*/
22			char *
23			gen_pw (int sz)
24			{
25			int i;
26	pippijn	1.5	char buf = salloc<char> (sz + 1); / padding */
27	pippijn	1.1
28			for (i = 0; i < sz; i++)
29			{
30	pippijn	1.4	buf[i] = ch[gen_rand32 () % 26];
31	pippijn	1.1	}
32
33			buf[sz] = 0;
34
35			return buf;
36			}
37
38			#ifdef HAVE_GETTIMEOFDAY
39			/* starts a timer */
40			void
41			s_time (struct timeval *sttime)
42			{
43			gettimeofday (sttime, NULL);
44			}
45			#endif
46
47			#ifdef HAVE_GETTIMEOFDAY
48			/* ends a timer */
49			void
50			e_time (struct timeval sttime, struct timeval *ttime)
51			{
52			struct timeval now;
53
54			gettimeofday (&now, NULL);
55			timersub (&now, &sttime, ttime);
56			}
57			#endif
58
59			#ifdef HAVE_GETTIMEOFDAY
60			/* translates microseconds into miliseconds */
61			int
62			tv2ms (struct timeval *tv)
63			{
64			return (tv->tv_sec * 1000) + (int) (tv->tv_usec / 1000);
65			}
66			#endif
67
68			/* replaces tabs with a single ASCII 32 */
69			void
70			tb2sp (char *line)
71			{
72			char *c;
73
74			while ((c = strchr (line, '\t')))
75			*c = ' ';
76			}
77
78			/* replace all occurances of 'oldstr' with 'newstr' */
79			char *
80	pippijn	1.4	replace (char s, int size, char const const oldstr, char const * const newstr)
81	pippijn	1.1	{
82			char *ptr = s;
83			int left = strlen (s);
84			int avail = size - (left + 1);
85			int oldstrlen = strlen (oldstr);
86			int newstrlen = strlen (newstr);
87			int diff = newstrlen - oldstrlen;
88
89			while (left >= oldstrlen)
90			{
91			if (strncmp (ptr, oldstr, oldstrlen))
92			{
93			left--;
94			ptr++;
95			continue;
96			}
97
98			if (diff > avail)
99			break;
100
101			if (diff != 0)
102			memmove (ptr + oldstrlen + diff, ptr + oldstrlen, left + 1);
103
104			memcpy (ptr, newstr, newstrlen);
105			ptr += newstrlen;
106			left -= oldstrlen;
107			}
108
109			return s;
110			}
111
112			/* reverse of atoi() */
113			char *
114			itoa (int num)
115			{
116			static char ret[32];
117			sprintf (ret, "%d", num);
118			return ret;
119			}
120
121			/* return the time elapsed since an event */
122			char *
123			time_ago (time_t event)
124			{
125			static char ret[128];
126			int years, weeks, days, hours, minutes, seconds;
127
128			event = NOW - event;
129			years = weeks = days = hours = minutes = seconds = 0;
130
131			while (event >= 60 * 60 * 24 * 365)
132			{
133			event -= 60 * 60 * 24 * 365;
134			years++;
135			}
136			while (event >= 60 * 60 * 24 * 7)
137			{
138			event -= 60 * 60 * 24 * 7;
139			weeks++;
140			}
141			while (event >= 60 * 60 * 24)
142			{
143			event -= 60 * 60 * 24;
144			days++;
145			}
146			while (event >= 60 * 60)
147			{
148			event -= 60 * 60;
149			hours++;
150			}
151			while (event >= 60)
152			{
153			event -= 60;
154			minutes++;
155			}
156
157			seconds = event;
158
159			if (years)
160			snprintf (ret, sizeof (ret), "%d year%s, %d week%s, %d day%s, %02d:%02d:%02d", years, years == 1 ? "" : "s", weeks, weeks == 1 ? "" : "s", days, days == 1 ? "" : "s", hours, minutes, seconds);
161			else if (weeks)
162			snprintf (ret, sizeof (ret), "%d week%s, %d day%s, %02d:%02d:%02d", weeks, weeks == 1 ? "" : "s", days, days == 1 ? "" : "s", hours, minutes, seconds);
163			else if (days)
164			snprintf (ret, sizeof (ret), "%d day%s, %02d:%02d:%02d", days, days == 1 ? "" : "s", hours, minutes, seconds);
165			else if (hours)
166			snprintf (ret, sizeof (ret), "%d hour%s, %d minute%s, %d second%s", hours, hours == 1 ? "" : "s", minutes, minutes == 1 ? "" : "s", seconds, seconds == 1 ? "" : "s");
167			else if (minutes)
168			snprintf (ret, sizeof (ret), "%d minute%s, %d second%s", minutes, minutes == 1 ? "" : "s", seconds, seconds == 1 ? "" : "s");
169			else
170			snprintf (ret, sizeof (ret), "%d second%s", seconds, seconds == 1 ? "" : "s");
171
172			return ret;
173			}
174
175			char *
176			timediff (time_t seconds)
177			{
178			static char buf[BUFSIZE];
179			long unsigned days, hours, minutes;
180
181			days = seconds / 86400;
182			seconds %= 86400;
183			hours = seconds / 3600;
184			hours %= 3600;
185			minutes = seconds / 60;
186			minutes %= 60;
187			seconds %= 60;
188
189			snprintf (buf, sizeof (buf), "%lu day%s, %lu:%02lu:%02lu", days, (days == 1) ? "" : "s", hours, minutes, (long unsigned) seconds);
190
191			return buf;
192			}
193
194			/* generate a random number, for use as a key */
195			unsigned long
196			makekey (void)
197			{
198			unsigned long k;
199
200	pippijn	1.4	k = gen_rand32 () & 0x7FFFFFFF;
201	pippijn	1.1
202			/* shorten or pad it to 9 digits */
203			if (k > 1000000000)
204			k = k - 1000000000;
205			if (k < 100000000)
206			k = k + 100000000;
207
208			return k;
209			}
210
211			bool
212			is_internal_client (user_t *u)
213			{
214			return (u && (!u->server \|\| u->server == me.me));
215			}
216
217			int
218			validemail (char *email)
219			{
220			int i, valid = 1, chars = 0;
221
222			/* sane length */
223			if (strlen (email) >= EMAILLEN)
224			valid = 0;
225
226			/* make sure it has @ and . */
227			if (!strchr (email, '@') \|\| !strchr (email, '.'))
228			valid = 0;
229
230			/* check for other bad things */
231			if (strchr (email, '\'') \|\| strchr (email, ' ') \|\| strchr (email, ',') \|\| strchr (email, '$') \|\| strchr (email, '/') \|\| strchr (email, ';') \|\| strchr (email, '<') \|\| strchr (email, '>') \|\| strchr (email, '&') \|\| strchr (email, '"'))
232			valid = 0;
233
234			/* make sure there are at least 6 characters besides the above
235			* mentioned @ and .
236			*/
237			for (i = strlen (email) - 1; i > 0; i--)
238			if (!(email[i] == '@' \|\| email[i] == '.'))
239			chars++;
240
241			if (chars < 6)
242			valid = 0;
243
244			return valid;
245			}
246
247			bool
248			validhostmask (char *host)
249			{
250	pippijn	1.4	char p, q;
251
252	pippijn	1.1	if (strchr (host, ' '))
253			return false;
254
255	pippijn	1.4	/* make sure it has ! and @ in that order and only once */
256			p = strchr (host, '!');
257			q = strchr (host, '@');
258			if (p == NULL \|\| q == NULL \|\| p > q \|\| strchr (p + 1, '!') \|\| strchr (q + 1, '@'))
259	pippijn	1.1	return false;
260
261			/* XXX this NICKLEN is too long */
262			if (strlen (host) > NICKLEN + USERLEN + HOSTLEN + 1)
263			return false;
264
265			if (host[0] == ',' \|\| host[0] == '-' \|\| host[0] == '#' \|\| host[0] == '@' \|\| host[0] == '!')
266			return false;
267
268			return true;
269			}
270
271			/* send the specified type of email.
272			*
273			* u is whoever caused this to be called, the corresponding service
274			* in case of xmlrpc
275			* type is EMAIL_*, see include/tools.h
276			* mu is the recipient user
277			* param depends on type, also see include/tools.h
278			*/
279			int
280	pippijn	1.4	sendemail (user_t u, int type, myuser_t mu, char const * const param)
281	pippijn	1.1	{
282			char email, date = NULL;
283			char cmdbuf[512], timebuf[256], to[128], from[128], subject[128];
284			FILE *out;
285			time_t t;
286			struct tm tm;
287			int pipfds[2];
288			pid_t pid;
289			int status;
290			int rc;
291			static time_t period_start = 0, lastwallops = 0;
292			static unsigned emailcount = 0;
293
294			if (u == NULL \|\| mu == NULL)
295			return 0;
296
297			if (me.mta == NULL)
298			{
299			if (type != EMAIL_MEMO && !is_internal_client (u))
300			notice (opersvs.me ? opersvs.nick : me.name, u->nick, "Sending email is administratively disabled.");
301			return 0;
302			}
303
304			if (type == EMAIL_SETEMAIL)
305			{
306			/* special case for e-mail change */
307	pippijn	1.6	metadata *md = mu->find_metadata ("private:verify:emailchg:newemail");
308	pippijn	1.1
309			if (md && md->value)
310			email = md->value;
311			else /* should NEVER happen */
312			{
313			slog (LG_ERROR, "sendemail(): got email change request, but newemail unset!");
314			return 0;
315			}
316			}
317			else
318			email = mu->email;
319
320			if (NOW - period_start > me.emailtime)
321			{
322			emailcount = 0;
323			period_start = NOW;
324			}
325			emailcount++;
326			if (emailcount > me.emaillimit)
327			{
328			if (NOW - lastwallops > 60)
329			{
330			wallops (_("Rejecting email for %s[%s@%s] due to too high load (type %d to %s <%s>)"), u->nick, u->user, u->vhost, type, mu->name, email);
331			slog (LG_ERROR, "sendemail(): rejecting email for %s[%s@%s] (%s) due to too high load (type %d to %s <%s>)", u->nick, u->user, u->vhost, u->ip[0] ? u->ip : u->host, type, mu->name, email);
332			lastwallops = NOW;
333			}
334			return 0;
335			}
336
337			slog (LG_INFO, "sendemail(): email for %s[%s@%s] (%s) type %d to %s <%s>", u->nick, u->user, u->vhost, u->ip[0] ? u->ip : u->host, type, mu->name, email);
338
339			/* set up the email headers */
340			time (&t);
341			tm = *gmtime (&t);
342			strftime (timebuf, sizeof (timebuf) - 1, "%a, %d %b %Y %H:%M:%S +0000", &tm);
343
344			date = timebuf;
345
346			snprintf (from, sizeof from, "%s automailer <noreply.%s>", me.netname, me.adminemail);
347			snprintf (to, sizeof to, "%s <%s>", mu->name, email);
348
349			strlcpy (subject, me.netname, sizeof subject);
350			strlcat (subject, " ", sizeof subject);
351			if (type == EMAIL_REGISTER)
352			if (nicksvs.no_nick_ownership)
353			strlcat (subject, "Account Registration", sizeof subject);
354			else
355			strlcat (subject, "Nickname Registration", sizeof subject);
356			else if (type == EMAIL_SENDPASS \|\| type == EMAIL_SETPASS)
357			strlcat (subject, "Password Retrieval", sizeof subject);
358			else if (type == EMAIL_SETEMAIL)
359			strlcat (subject, "Change Email Confirmation", sizeof subject);
360			else if (type == EMAIL_MEMO)
361			strlcat (subject, "New memo", sizeof subject);
362
363			/* now set up the email */
364			sprintf (cmdbuf, "%s %s", me.mta, email);
365			if (pipe (pipfds) < 0)
366			return 0;
367			switch (pid = fork ())
368			{
369			case -1:
370			return 0;
371			case 0:
372			close (pipfds[1]);
373			dup2 (pipfds[0], 0);
374			switch (fork ())
375			{
376			/* fork again to avoid zombies -- jilles */
377			case -1:
378			_exit (255);
379			case 0:
380			execl ("/bin/sh", "sh", "-c", cmdbuf, NULL);
381			_exit (255);
382			default:
383			_exit (0);
384			}
385			}
386			close (pipfds[0]);
387			waitpid (pid, &status, 0);
388			out = fdopen (pipfds[1], "w");
389
390			fprintf (out, "From: %s\n", from);
391			fprintf (out, "To: %s\n", to);
392			fprintf (out, "Subject: %s\n", subject);
393			fprintf (out, "Date: %s\n\n", date);
394
395			fprintf (out, "%s,\n\n", mu->name);
396
397			if (type == EMAIL_REGISTER)
398			{
399			fprintf (out, "In order to complete your registration, you must send the following\ncommand on IRC:\n");
400			fprintf (out, "/MSG %s VERIFY REGISTER %s %s\n\n", nicksvs.nick, mu->name, param);
401			fprintf (out, "Thank you for registering your %s on the %s IRC " "network!\n\n", (nicksvs.no_nick_ownership ? "account" : "nickname"), me.netname);
402			}
403			else if (type == EMAIL_SENDPASS)
404			{
405			fprintf (out, "Someone has requested the password for %s be sent to the\n" "corresponding email address. If you did not request this action\n" "please let us know.\n\n", mu->name);
406			fprintf (out, "The password for %s is %s. Please write this down for " "future reference.\n\n", mu->name, param);
407			}
408			else if (type == EMAIL_SETEMAIL)
409			{
410			fprintf (out, "In order to complete your email change, you must send\n" "the following command on IRC:\n");
411			fprintf (out, "/MSG %s VERIFY EMAILCHG %s %s\n\n", nicksvs.nick, mu->name, param);
412			}
413			else if (type == EMAIL_MEMO)
414			{
415			if (u->myuser != NULL)
416			fprintf (out, "You have a new memo from %s.\n\n", u->myuser->name);
417			else
418			/* shouldn't happen */
419			fprintf (out, "You have a new memo from %s (unregistered?).\n\n", u->nick);
420			fprintf (out, "%s\n\n", param);
421			}
422			else if (type == EMAIL_SETPASS)
423			{
424			fprintf (out, "In order to set a new password, you must send\n" "the following command on IRC:\n");
425			fprintf (out, "/MSG %s SETPASS %s %s <password>\nwhere <password> is your desired new password.\n\n", nicksvs.nick, mu->name, param);
426			}
427
428			fprintf (out, "Thank you for your interest in the %s IRC network.\n", me.netname);
429			if (u->server != me.me)
430			fprintf (out, "\nThis email was sent due to a command from %s[%s@%s]\nat %s.\n", u->nick, u->user, u->vhost, date);
431			fprintf (out, "If this message is spam, please contact %s\nwith a full copy.\n", me.adminemail);
432			fprintf (out, ".\n");
433			rc = 1;
434			if (ferror (out))
435			rc = 0;
436			if (fclose (out) < 0)
437			rc = 0;
438			if (rc == 0)
439			slog (LG_ERROR, "sendemail(): mta failure");
440			return rc;
441			}
442
443			/* various access level checkers */
444			bool
445	pippijn	1.4	myuser_t::is_founder (mychan_t *mc) const
446	pippijn	1.1	{
447	pippijn	1.4	if (chanacs_find (mc, this, CA_FOUNDER))
448	pippijn	1.1	return true;
449
450			return false;
451			}
452
453			bool
454	pippijn	1.4	myuser_t::should_owner (mychan_t *mc) const
455	pippijn	1.1	{
456	pippijn	1.4	if (MC_NOOP & mc->flags)
457	pippijn	1.1	return false;
458
459	pippijn	1.4	if (MU_NOOP & flags)
460	pippijn	1.1	return false;
461
462	pippijn	1.4	if (is_founder (mc))
463	pippijn	1.1	return true;
464
465			return false;
466			}
467
468			bool
469	pippijn	1.4	myuser_t::should_protect (mychan_t *mc) const
470	pippijn	1.1	{
471	pippijn	1.4	if (MC_NOOP & mc->flags)
472	pippijn	1.1	return false;
473
474	pippijn	1.4	if (MU_NOOP & flags)
475	pippijn	1.1	return false;
476
477	pippijn	1.4	if (chanacs_find (mc, this, CA_SET))
478	pippijn	1.1	return true;
479
480			return false;
481			}
482
483			bool
484			is_ircop (user_t *user)
485			{
486			if (UF_IRCOP & user->flags)
487			return true;
488
489			return false;
490			}
491
492			bool
493			is_admin (user_t *user)
494			{
495			if (UF_ADMIN & user->flags)
496			return true;
497
498			return false;
499			}
500
501			void
502	pippijn	1.4	myuser_t::set_password (char const * const newpassword)
503	pippijn	1.1	{
504	pippijn	1.4	if (newpassword == NULL)
505	pippijn	1.1	return;
506
507			/* if we can, try to crypt it */
508	pippijn	1.4	if (crypto::handler::loaded)
509	pippijn	1.1	{
510	pippijn	1.4	flags \|= MU_CRYPTPASS;
511			strlcpy (pass, crypter->crypt (newpassword, crypto::gen_salt ()), NICKLEN);
512	pippijn	1.1	}
513			else
514			{
515	pippijn	1.4	flags &= ~MU_CRYPTPASS; /* just in case */
516			strlcpy (pass, newpassword, NICKLEN);
517	pippijn	1.1	}
518			}
519
520			bool
521	pippijn	1.4	myuser_t::verify_password (char const * const password) const
522	pippijn	1.1	{
523	pippijn	1.4	if (password == NULL)
524	pippijn	1.1	return false;
525
526	pippijn	1.4	if (flags & MU_CRYPTPASS)
527			if (crypto::handler::loaded)
528			return crypto::verify_password (password, pass);
529	pippijn	1.1	else
530			{ /* not good! */
531			slog (LG_ERROR, "check_password(): can't check crypted password -- no crypto module!");
532			return false;
533			}
534			else
535	pippijn	1.4	return (strcmp (pass, password) == 0);
536	pippijn	1.1	}
537
538	pippijn	1.4	char const *
539	pippijn	1.1	sbytes (float x)
540			{
541			if (x > 1073741824.0)
542			return "GB";
543
544			else if (x > 1048576.0)
545			return "MB";
546
547			else if (x > 1024.0)
548			return "KB";
549
550			return "B";
551			}
552
553			float
554			bytes (float x)
555			{
556			if (x > 1073741824.0)
557			return (x / 1073741824.0);
558
559			if (x > 1048576.0)
560			return (x / 1048576.0);
561
562			if (x > 1024.0)
563			return (x / 1024.0);
564
565			return x;
566			}