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 (19 years ago) by pippijn
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+7 -3 lines
Log Message:	#defines to enum
#	Content
1	/*
2	* function.C: Miscellaneous functions.
3	*
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	* Rights to this code are documented in doc/pod/license.pod.
10	* Copyright © 2005-2007 Atheme Project (http://www.atheme.org)
11	*/
12
13	static char const rcsid[] = "$Id: function.C,v 1.7 2007-09-09 20:05:52 pippijn Exp $";
14
15	#include "atheme.h"
16	#include <common/util.h>
17	#include <ermyth/crypto.h>
18	#include <account/mychan.h>
19	#include <account/chanacs.h>
20	#include <account/myuser.h>
21	#include <common/random.h>
22
23	char ch[27] = "abcdefghijklmnopqrstuvwxyz";
24
25	/* This function uses allocates memory.
26	* You MUST free the result when you are done with it!
27	*/
28	char *
29	gen_pw (int sz)
30	{
31	int i;
32	char buf = salloc<char> (sz + 1); / padding */
33
34	for (i = 0; i < sz; i++)
35	{
36	buf[i] = ch[gen_rand32 () % 26];
37	}
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	replace (char s, int size, char const const oldstr, char const * const newstr)
87	{
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	k = gen_rand32 () & 0x7FFFFFFF;
198
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	char p, q;
248
249	if (strchr (host, ' '))
250	return false;
251
252	/* 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	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	sendemail (user_t u, int type, myuser_t mu, char const * const param)
278	{
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	metadata *md = mu->find_metadata ("private:verify:emailchg:newemail");
305
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	myuser_t::is_founder (mychan_t *mc) const
443	{
444	if (chanacs_find (mc, this, CA_FOUNDER))
445	return true;
446
447	return false;
448	}
449
450	bool
451	myuser_t::should_owner (mychan_t *mc) const
452	{
453	if (MC_NOOP & mc->flags)
454	return false;
455
456	if (MU_NOOP & flags)
457	return false;
458
459	if (is_founder (mc))
460	return true;
461
462	return false;
463	}
464
465	bool
466	myuser_t::should_protect (mychan_t *mc) const
467	{
468	if (MC_NOOP & mc->flags)
469	return false;
470
471	if (MU_NOOP & flags)
472	return false;
473
474	if (chanacs_find (mc, this, CA_SET))
475	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	myuser_t::set_password (char const * const newpassword)
500	{
501	if (newpassword == NULL)
502	return;
503
504	/* if we can, try to crypt it */
505	if (crypto::handler::loaded)
506	{
507	flags \|= MU_CRYPTPASS;
508	strlcpy (pass, crypter->crypt (newpassword, crypto::gen_salt ()), NICKLEN);
509	}
510	else
511	{
512	flags &= ~MU_CRYPTPASS; /* just in case */
513	strlcpy (pass, newpassword, NICKLEN);
514	}
515	}
516
517	bool
518	myuser_t::verify_password (char const * const password) const
519	{
520	if (password == NULL)
521	return false;
522
523	if (flags & MU_CRYPTPASS)
524	if (crypto::handler::loaded)
525	return crypto::verify_password (password, pass);
526	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	return (strcmp (pass, password) == 0);
533	}
534
535	char const *
536	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	}