ermyth/src/function.C

/*
 * function.C: Miscellaneous functions.
 *
 * Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team
 * Rights to this code are as documented in COPYING.
 *
 *
 * Portions of this file were derived from sources bearing the following license:
 * 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 1.7 2007-09-09 20:05:52 pippijn Exp $";

#include "atheme.h"
#include <common/util.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;
}

/* 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:	1.8
Committed:	Sun Sep 16 18:54:45 2007 UTC (16 years, 8 months ago) by pippijn
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+7 -3 lines
Log Message:	#defines to enum
#	User	Rev	Content
1	pippijn	1.1	/*
2			* function.C: Miscellaneous functions.
3	pippijn	1.8	*
4			* Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team
5			* Rights to this code are as documented in COPYING.
6			*
7			*
8			* Portions of this file were derived from sources bearing the following license:
9	pippijn	1.2	* Rights to this code are documented in doc/pod/license.pod.
10	pippijn	1.4	* Copyright © 2005-2007 Atheme Project (http://www.atheme.org)
11	pippijn	1.1	*/
12
13	pippijn	1.8	static char const rcsid[] = "$Id: function.C,v 1.7 2007-09-09 20:05:52 pippijn Exp $";
14	pippijn	1.1
15			#include "atheme.h"
16	pippijn	1.7	#include <common/util.h>
17	pippijn	1.4	#include <ermyth/crypto.h>
18	pippijn	1.1	#include <account/mychan.h>
19			#include <account/chanacs.h>
20			#include <account/myuser.h>
21	pippijn	1.4	#include <common/random.h>
22	pippijn	1.1
23			char ch[27] = "abcdefghijklmnopqrstuvwxyz";
24
25	pippijn	1.4	/* This function uses allocates memory.
26	pippijn	1.1	* You MUST free the result when you are done with it!
27			*/
28			char *
29			gen_pw (int sz)
30			{
31			int i;
32	pippijn	1.5	char buf = salloc<char> (sz + 1); / padding */
33	pippijn	1.1
34			for (i = 0; i < sz; i++)
35			{
36	pippijn	1.4	buf[i] = ch[gen_rand32 () % 26];
37	pippijn	1.1	}
38
39			buf[sz] = 0;
40
41			return buf;
42			}
43
44			#ifdef HAVE_GETTIMEOFDAY
45			/* starts a timer */
46			void
47			s_time (struct timeval *sttime)
48			{
49			gettimeofday (sttime, NULL);
50			}
51			#endif
52
53			#ifdef HAVE_GETTIMEOFDAY
54			/* ends a timer */
55			void
56			e_time (struct timeval sttime, struct timeval *ttime)
57			{
58			struct timeval now;
59
60			gettimeofday (&now, NULL);
61			timersub (&now, &sttime, ttime);
62			}
63			#endif
64
65			#ifdef HAVE_GETTIMEOFDAY
66			/* translates microseconds into miliseconds */
67			int
68			tv2ms (struct timeval *tv)
69			{
70			return (tv->tv_sec * 1000) + (int) (tv->tv_usec / 1000);
71			}
72			#endif
73
74			/* replaces tabs with a single ASCII 32 */
75			void
76			tb2sp (char *line)
77			{
78			char *c;
79
80			while ((c = strchr (line, '\t')))
81			*c = ' ';
82			}
83
84			/* replace all occurances of 'oldstr' with 'newstr' */
85			char *
86	pippijn	1.4	replace (char s, int size, char const const oldstr, char const * const newstr)
87	pippijn	1.1	{
88			char *ptr = s;
89			int left = strlen (s);
90			int avail = size - (left + 1);
91			int oldstrlen = strlen (oldstr);
92			int newstrlen = strlen (newstr);
93			int diff = newstrlen - oldstrlen;
94
95			while (left >= oldstrlen)
96			{
97			if (strncmp (ptr, oldstr, oldstrlen))
98			{
99			left--;
100			ptr++;
101			continue;
102			}
103
104			if (diff > avail)
105			break;
106
107			if (diff != 0)
108			memmove (ptr + oldstrlen + diff, ptr + oldstrlen, left + 1);
109
110			memcpy (ptr, newstr, newstrlen);
111			ptr += newstrlen;
112			left -= oldstrlen;
113			}
114
115			return s;
116			}
117
118			/* return the time elapsed since an event */
119			char *
120			time_ago (time_t event)
121			{
122			static char ret[128];
123			int years, weeks, days, hours, minutes, seconds;
124
125			event = NOW - event;
126			years = weeks = days = hours = minutes = seconds = 0;
127
128			while (event >= 60 * 60 * 24 * 365)
129			{
130			event -= 60 * 60 * 24 * 365;
131			years++;
132			}
133			while (event >= 60 * 60 * 24 * 7)
134			{
135			event -= 60 * 60 * 24 * 7;
136			weeks++;
137			}
138			while (event >= 60 * 60 * 24)
139			{
140			event -= 60 * 60 * 24;
141			days++;
142			}
143			while (event >= 60 * 60)
144			{
145			event -= 60 * 60;
146			hours++;
147			}
148			while (event >= 60)
149			{
150			event -= 60;
151			minutes++;
152			}
153
154			seconds = event;
155
156			if (years)
157			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);
158			else if (weeks)
159			snprintf (ret, sizeof (ret), "%d week%s, %d day%s, %02d:%02d:%02d", weeks, weeks == 1 ? "" : "s", days, days == 1 ? "" : "s", hours, minutes, seconds);
160			else if (days)
161			snprintf (ret, sizeof (ret), "%d day%s, %02d:%02d:%02d", days, days == 1 ? "" : "s", hours, minutes, seconds);
162			else if (hours)
163			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");
164			else if (minutes)
165			snprintf (ret, sizeof (ret), "%d minute%s, %d second%s", minutes, minutes == 1 ? "" : "s", seconds, seconds == 1 ? "" : "s");
166			else
167			snprintf (ret, sizeof (ret), "%d second%s", seconds, seconds == 1 ? "" : "s");
168
169			return ret;
170			}
171
172			char *
173			timediff (time_t seconds)
174			{
175			static char buf[BUFSIZE];
176			long unsigned days, hours, minutes;
177
178			days = seconds / 86400;
179			seconds %= 86400;
180			hours = seconds / 3600;
181			hours %= 3600;
182			minutes = seconds / 60;
183			minutes %= 60;
184			seconds %= 60;
185
186			snprintf (buf, sizeof (buf), "%lu day%s, %lu:%02lu:%02lu", days, (days == 1) ? "" : "s", hours, minutes, (long unsigned) seconds);
187
188			return buf;
189			}
190
191			/* generate a random number, for use as a key */
192			unsigned long
193			makekey (void)
194			{
195			unsigned long k;
196
197	pippijn	1.4	k = gen_rand32 () & 0x7FFFFFFF;
198	pippijn	1.1
199			/* shorten or pad it to 9 digits */
200			if (k > 1000000000)
201			k = k - 1000000000;
202			if (k < 100000000)
203			k = k + 100000000;
204
205			return k;
206			}
207
208			bool
209			is_internal_client (user_t *u)
210			{
211			return (u && (!u->server \|\| u->server == me.me));
212			}
213
214			int
215			validemail (char *email)
216			{
217			int i, valid = 1, chars = 0;
218
219			/* sane length */
220			if (strlen (email) >= EMAILLEN)
221			valid = 0;
222
223			/* make sure it has @ and . */
224			if (!strchr (email, '@') \|\| !strchr (email, '.'))
225			valid = 0;
226
227			/* check for other bad things */
228			if (strchr (email, '\'') \|\| strchr (email, ' ') \|\| strchr (email, ',') \|\| strchr (email, '$') \|\| strchr (email, '/') \|\| strchr (email, ';') \|\| strchr (email, '<') \|\| strchr (email, '>') \|\| strchr (email, '&') \|\| strchr (email, '"'))
229			valid = 0;
230
231			/* make sure there are at least 6 characters besides the above
232			* mentioned @ and .
233			*/
234			for (i = strlen (email) - 1; i > 0; i--)
235			if (!(email[i] == '@' \|\| email[i] == '.'))
236			chars++;
237
238			if (chars < 6)
239			valid = 0;
240
241			return valid;
242			}
243
244			bool
245			validhostmask (char *host)
246			{
247	pippijn	1.4	char p, q;
248
249	pippijn	1.1	if (strchr (host, ' '))
250			return false;
251
252	pippijn	1.4	/* make sure it has ! and @ in that order and only once */
253			p = strchr (host, '!');
254			q = strchr (host, '@');
255			if (p == NULL \|\| q == NULL \|\| p > q \|\| strchr (p + 1, '!') \|\| strchr (q + 1, '@'))
256	pippijn	1.1	return false;
257
258			/* XXX this NICKLEN is too long */
259			if (strlen (host) > NICKLEN + USERLEN + HOSTLEN + 1)
260			return false;
261
262			if (host[0] == ',' \|\| host[0] == '-' \|\| host[0] == '#' \|\| host[0] == '@' \|\| host[0] == '!')
263			return false;
264
265			return true;
266			}
267
268			/* send the specified type of email.
269			*
270			* u is whoever caused this to be called, the corresponding service
271			* in case of xmlrpc
272			* type is EMAIL_*, see include/tools.h
273			* mu is the recipient user
274			* param depends on type, also see include/tools.h
275			*/
276			int
277	pippijn	1.4	sendemail (user_t u, int type, myuser_t mu, char const * const param)
278	pippijn	1.1	{
279			char email, date = NULL;
280			char cmdbuf[512], timebuf[256], to[128], from[128], subject[128];
281			FILE *out;
282			time_t t;
283			struct tm tm;
284			int pipfds[2];
285			pid_t pid;
286			int status;
287			int rc;
288			static time_t period_start = 0, lastwallops = 0;
289			static unsigned emailcount = 0;
290
291			if (u == NULL \|\| mu == NULL)
292			return 0;
293
294			if (me.mta == NULL)
295			{
296			if (type != EMAIL_MEMO && !is_internal_client (u))
297			notice (opersvs.me ? opersvs.nick : me.name, u->nick, "Sending email is administratively disabled.");
298			return 0;
299			}
300
301			if (type == EMAIL_SETEMAIL)
302			{
303			/* special case for e-mail change */
304	pippijn	1.6	metadata *md = mu->find_metadata ("private:verify:emailchg:newemail");
305	pippijn	1.1
306			if (md && md->value)
307			email = md->value;
308			else /* should NEVER happen */
309			{
310			slog (LG_ERROR, "sendemail(): got email change request, but newemail unset!");
311			return 0;
312			}
313			}
314			else
315			email = mu->email;
316
317			if (NOW - period_start > me.emailtime)
318			{
319			emailcount = 0;
320			period_start = NOW;
321			}
322			emailcount++;
323			if (emailcount > me.emaillimit)
324			{
325			if (NOW - lastwallops > 60)
326			{
327			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);
328			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);
329			lastwallops = NOW;
330			}
331			return 0;
332			}
333
334			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);
335
336			/* set up the email headers */
337			time (&t);
338			tm = *gmtime (&t);
339			strftime (timebuf, sizeof (timebuf) - 1, "%a, %d %b %Y %H:%M:%S +0000", &tm);
340
341			date = timebuf;
342
343			snprintf (from, sizeof from, "%s automailer <noreply.%s>", me.netname, me.adminemail);
344			snprintf (to, sizeof to, "%s <%s>", mu->name, email);
345
346			strlcpy (subject, me.netname, sizeof subject);
347			strlcat (subject, " ", sizeof subject);
348			if (type == EMAIL_REGISTER)
349			if (nicksvs.no_nick_ownership)
350			strlcat (subject, "Account Registration", sizeof subject);
351			else
352			strlcat (subject, "Nickname Registration", sizeof subject);
353			else if (type == EMAIL_SENDPASS \|\| type == EMAIL_SETPASS)
354			strlcat (subject, "Password Retrieval", sizeof subject);
355			else if (type == EMAIL_SETEMAIL)
356			strlcat (subject, "Change Email Confirmation", sizeof subject);
357			else if (type == EMAIL_MEMO)
358			strlcat (subject, "New memo", sizeof subject);
359
360			/* now set up the email */
361			sprintf (cmdbuf, "%s %s", me.mta, email);
362			if (pipe (pipfds) < 0)
363			return 0;
364			switch (pid = fork ())
365			{
366			case -1:
367			return 0;
368			case 0:
369			close (pipfds[1]);
370			dup2 (pipfds[0], 0);
371			switch (fork ())
372			{
373			/* fork again to avoid zombies -- jilles */
374			case -1:
375			_exit (255);
376			case 0:
377			execl ("/bin/sh", "sh", "-c", cmdbuf, NULL);
378			_exit (255);
379			default:
380			_exit (0);
381			}
382			}
383			close (pipfds[0]);
384			waitpid (pid, &status, 0);
385			out = fdopen (pipfds[1], "w");
386
387			fprintf (out, "From: %s\n", from);
388			fprintf (out, "To: %s\n", to);
389			fprintf (out, "Subject: %s\n", subject);
390			fprintf (out, "Date: %s\n\n", date);
391
392			fprintf (out, "%s,\n\n", mu->name);
393
394			if (type == EMAIL_REGISTER)
395			{
396			fprintf (out, "In order to complete your registration, you must send the following\ncommand on IRC:\n");
397			fprintf (out, "/MSG %s VERIFY REGISTER %s %s\n\n", nicksvs.nick, mu->name, param);
398			fprintf (out, "Thank you for registering your %s on the %s IRC " "network!\n\n", (nicksvs.no_nick_ownership ? "account" : "nickname"), me.netname);
399			}
400			else if (type == EMAIL_SENDPASS)
401			{
402			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);
403			fprintf (out, "The password for %s is %s. Please write this down for " "future reference.\n\n", mu->name, param);
404			}
405			else if (type == EMAIL_SETEMAIL)
406			{
407			fprintf (out, "In order to complete your email change, you must send\n" "the following command on IRC:\n");
408			fprintf (out, "/MSG %s VERIFY EMAILCHG %s %s\n\n", nicksvs.nick, mu->name, param);
409			}
410			else if (type == EMAIL_MEMO)
411			{
412			if (u->myuser != NULL)
413			fprintf (out, "You have a new memo from %s.\n\n", u->myuser->name);
414			else
415			/* shouldn't happen */
416			fprintf (out, "You have a new memo from %s (unregistered?).\n\n", u->nick);
417			fprintf (out, "%s\n\n", param);
418			}
419			else if (type == EMAIL_SETPASS)
420			{
421			fprintf (out, "In order to set a new password, you must send\n" "the following command on IRC:\n");
422			fprintf (out, "/MSG %s SETPASS %s %s <password>\nwhere <password> is your desired new password.\n\n", nicksvs.nick, mu->name, param);
423			}
424
425			fprintf (out, "Thank you for your interest in the %s IRC network.\n", me.netname);
426			if (u->server != me.me)
427			fprintf (out, "\nThis email was sent due to a command from %s[%s@%s]\nat %s.\n", u->nick, u->user, u->vhost, date);
428			fprintf (out, "If this message is spam, please contact %s\nwith a full copy.\n", me.adminemail);
429			fprintf (out, ".\n");
430			rc = 1;
431			if (ferror (out))
432			rc = 0;
433			if (fclose (out) < 0)
434			rc = 0;
435			if (rc == 0)
436			slog (LG_ERROR, "sendemail(): mta failure");
437			return rc;
438			}
439
440			/* various access level checkers */
441			bool
442	pippijn	1.4	myuser_t::is_founder (mychan_t *mc) const
443	pippijn	1.1	{
444	pippijn	1.4	if (chanacs_find (mc, this, CA_FOUNDER))
445	pippijn	1.1	return true;
446
447			return false;
448			}
449
450			bool
451	pippijn	1.4	myuser_t::should_owner (mychan_t *mc) const
452	pippijn	1.1	{
453	pippijn	1.4	if (MC_NOOP & mc->flags)
454	pippijn	1.1	return false;
455
456	pippijn	1.4	if (MU_NOOP & flags)
457	pippijn	1.1	return false;
458
459	pippijn	1.4	if (is_founder (mc))
460	pippijn	1.1	return true;
461
462			return false;
463			}
464
465			bool
466	pippijn	1.4	myuser_t::should_protect (mychan_t *mc) const
467	pippijn	1.1	{
468	pippijn	1.4	if (MC_NOOP & mc->flags)
469	pippijn	1.1	return false;
470
471	pippijn	1.4	if (MU_NOOP & flags)
472	pippijn	1.1	return false;
473
474	pippijn	1.4	if (chanacs_find (mc, this, CA_SET))
475	pippijn	1.1	return true;
476
477			return false;
478			}
479
480			bool
481			is_ircop (user_t *user)
482			{
483			if (UF_IRCOP & user->flags)
484			return true;
485
486			return false;
487			}
488
489			bool
490			is_admin (user_t *user)
491			{
492			if (UF_ADMIN & user->flags)
493			return true;
494
495			return false;
496			}
497
498			void
499	pippijn	1.4	myuser_t::set_password (char const * const newpassword)
500	pippijn	1.1	{
501	pippijn	1.4	if (newpassword == NULL)
502	pippijn	1.1	return;
503
504			/* if we can, try to crypt it */
505	pippijn	1.4	if (crypto::handler::loaded)
506	pippijn	1.1	{
507	pippijn	1.4	flags \|= MU_CRYPTPASS;
508			strlcpy (pass, crypter->crypt (newpassword, crypto::gen_salt ()), NICKLEN);
509	pippijn	1.1	}
510			else
511			{
512	pippijn	1.4	flags &= ~MU_CRYPTPASS; /* just in case */
513			strlcpy (pass, newpassword, NICKLEN);
514	pippijn	1.1	}
515			}
516
517			bool
518	pippijn	1.4	myuser_t::verify_password (char const * const password) const
519	pippijn	1.1	{
520	pippijn	1.4	if (password == NULL)
521	pippijn	1.1	return false;
522
523	pippijn	1.4	if (flags & MU_CRYPTPASS)
524			if (crypto::handler::loaded)
525			return crypto::verify_password (password, pass);
526	pippijn	1.1	else
527			{ /* not good! */
528			slog (LG_ERROR, "check_password(): can't check crypted password -- no crypto module!");
529			return false;
530			}
531			else
532	pippijn	1.4	return (strcmp (pass, password) == 0);
533	pippijn	1.1	}
534
535	pippijn	1.4	char const *
536	pippijn	1.1	sbytes (float x)
537			{
538			if (x > 1073741824.0)
539			return "GB";
540
541			else if (x > 1048576.0)
542			return "MB";
543
544			else if (x > 1024.0)
545			return "KB";
546
547			return "B";
548			}
549
550			float
551			bytes (float x)
552			{
553			if (x > 1073741824.0)
554			return (x / 1073741824.0);
555
556			if (x > 1048576.0)
557			return (x / 1048576.0);
558
559			if (x > 1024.0)
560			return (x / 1024.0);
561
562			return x;
563			}