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/*
* This file contains functions which handle the mapping of Internet addresses
* to users on the Citadel system.
*
* Copyright (c) 1987-2017 by the citadel.org team
*
* This program is open source software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "sysdep.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <ctype.h>
#include <signal.h>
#include <pwd.h>
#include <errno.h>
#include <sys/types.h>
#include <time.h>
#include <sys/wait.h>
#include <string.h>
#include <limits.h>
#include <libcitadel.h>
#include "citadel.h"
#include "server.h"
#include "sysdep_decls.h"
#include "citserver.h"
#include "support.h"
#include "config.h"
#include "msgbase.h"
#include "internet_addressing.h"
#include "user_ops.h"
#include "room_ops.h"
#include "parsedate.h"
#include "database.h"
#include "ctdl_module.h"
#ifdef HAVE_ICONV
#include <iconv.h>
#if 0
/* This is the non-define version in case it is needed for debugging */
inline void FindNextEnd (char *bptr, char *end)
{
/* Find the next ?Q? */
end = strchr(bptr + 2, '?');
if (end == NULL) return NULL;
if (((*(end + 1) == 'B') || (*(end + 1) == 'Q')) &&
(*(end + 2) == '?')) {
/* skip on to the end of the cluster, the next ?= */
end = strstr(end + 3, "?=");
}
else
/* sort of half valid encoding, try to find an end. */
end = strstr(bptr, "?=");
}
#endif
#define FindNextEnd(bptr, end) { \
end = strchr(bptr + 2, '?'); \
if (end != NULL) { \
if (((*(end + 1) == 'B') || (*(end + 1) == 'Q')) && (*(end + 2) == '?')) { \
end = strstr(end + 3, "?="); \
} else end = strstr(bptr, "?="); \
} \
}
/*
* Handle subjects with RFC2047 encoding such as:
* =?koi8-r?B?78bP0s3Mxc7JxSDXz9rE1dvO2c3JINvB0sHNySDP?=
*/
void utf8ify_rfc822_string(char *buf) {
char *start, *end, *next, *nextend, *ptr;
char newbuf[1024];
char charset[128];
char encoding[16];
char istr[1024];
iconv_t ic = (iconv_t)(-1) ;
char *ibuf; // Buffer of characters to be converted
char *obuf; // Buffer for converted characters
size_t ibuflen; // Length of input buffer
size_t obuflen; // Length of output buffer
char *isav; // Saved pointer to input buffer
char *osav; // Saved pointer to output buffer
int passes = 0;
int i, len, delta;
int illegal_non_rfc2047_encoding = 0;
/* Sometimes, badly formed messages contain strings which were simply
* written out directly in some foreign character set instead of
* using RFC2047 encoding. This is illegal but we will attempt to
* handle it anyway by converting from a user-specified default
* charset to UTF-8 if we see any nonprintable characters.
*/
len = strlen(buf);
for (i=0; i<len; ++i) {
if ((buf[i] < 32) || (buf[i] > 126)) {
illegal_non_rfc2047_encoding = 1;
i = len; // take a shortcut, it won't be more than one.
}
}
if (illegal_non_rfc2047_encoding) {
const char *default_header_charset = "iso-8859-1";
if ( (strcasecmp(default_header_charset, "UTF-8")) && (strcasecmp(default_header_charset, "us-ascii")) ) {
ctdl_iconv_open("UTF-8", default_header_charset, &ic);
if (ic != (iconv_t)(-1) ) {
ibuf = malloc(1024);
isav = ibuf;
safestrncpy(ibuf, buf, 1024);
ibuflen = strlen(ibuf);
obuflen = 1024;
obuf = (char *) malloc(obuflen);
osav = obuf;
iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
osav[1024-obuflen] = 0;
strcpy(buf, osav);
free(osav);
iconv_close(ic);
free(isav);
}
}
}
/* pre evaluate the first pair */
nextend = end = NULL;
len = strlen(buf);
start = strstr(buf, "=?");
if (start != NULL)
FindNextEnd (start, end);
while ((start != NULL) && (end != NULL))
{
next = strstr(end, "=?");
if (next != NULL)
FindNextEnd(next, nextend);
if (nextend == NULL)
next = NULL;
/* did we find two partitions */
if ((next != NULL) &&
((next - end) > 2))
{
ptr = end + 2;
while ((ptr < next) &&
(isspace(*ptr) ||
(*ptr == '\r') ||
(*ptr == '\n') ||
(*ptr == '\t')))
ptr ++;
/* did we find a gab just filled with blanks? */
if (ptr == next)
{
memmove (end + 2,
next,
len - (next - start));
/* now terminate the gab at the end */
delta = (next - end) - 2;
len -= delta;
buf[len] = '\0';
/* move next to its new location. */
next -= delta;
nextend -= delta;
}
}
/* our next-pair is our new first pair now. */
start = next;
end = nextend;
}
/* Now we handle foreign character sets properly encoded
* in RFC2047 format.
*/
start = strstr(buf, "=?");
FindNextEnd((start != NULL)? start : buf, end);
while (start != NULL && end != NULL && end > start)
{
extract_token(charset, start, 1, '?', sizeof charset);
extract_token(encoding, start, 2, '?', sizeof encoding);
extract_token(istr, start, 3, '?', sizeof istr);
ibuf = malloc(1024);
isav = ibuf;
if (!strcasecmp(encoding, "B")) { // base64
ibuflen = CtdlDecodeBase64(ibuf, istr, strlen(istr));
}
else if (!strcasecmp(encoding, "Q")) { // quoted-printable
size_t len;
unsigned long pos;
len = strlen(istr);
pos = 0;
while (pos < len)
{
if (istr[pos] == '_') istr[pos] = ' ';
pos++;
}
ibuflen = CtdlDecodeQuotedPrintable(ibuf, istr, len);
}
else {
strcpy(ibuf, istr); // unknown encoding
ibuflen = strlen(istr);
}
ctdl_iconv_open("UTF-8", charset, &ic);
if (ic != (iconv_t)(-1) ) {
obuflen = 1024;
obuf = (char *) malloc(obuflen);
osav = obuf;
iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
osav[1024-obuflen] = 0;
end = start;
end++;
strcpy(start, "");
remove_token(end, 0, '?');
remove_token(end, 0, '?');
remove_token(end, 0, '?');
remove_token(end, 0, '?');
strcpy(end, &end[1]);
snprintf(newbuf, sizeof newbuf, "%s%s%s", buf, osav, end);
strcpy(buf, newbuf);
free(osav);
iconv_close(ic);
}
else {
end = start;
end++;
strcpy(start, "");
remove_token(end, 0, '?');
remove_token(end, 0, '?');
remove_token(end, 0, '?');
remove_token(end, 0, '?');
strcpy(end, &end[1]);
snprintf(newbuf, sizeof newbuf, "%s(unreadable)%s", buf, end);
strcpy(buf, newbuf);
}
free(isav);
/*
* Since spammers will go to all sorts of absurd lengths to get their
* messages through, there are LOTS of corrupt headers out there.
* So, prevent a really badly formed RFC2047 header from throwing
* this function into an infinite loop.
*/
++passes;
if (passes > 20) return;
start = strstr(buf, "=?");
FindNextEnd((start != NULL)? start : buf, end);
}
}
#else
inline void utf8ify_rfc822_string(char *a){};
#endif
struct trynamebuf {
char buffer1[SIZ];
char buffer2[SIZ];
};
char *inetcfg = NULL;
/*
* Return nonzero if the supplied name is an alias for this host.
*/
int CtdlHostAlias(char *fqdn) {
int config_lines;
int i;
char buf[256];
char host[256], type[256];
int found = 0;
if (fqdn == NULL) return(hostalias_nomatch);
if (IsEmptyStr(fqdn)) return(hostalias_nomatch);
if (!strcasecmp(fqdn, "localhost")) return(hostalias_localhost);
if (!strcasecmp(fqdn, CtdlGetConfigStr("c_fqdn"))) return(hostalias_localhost);
if (!strcasecmp(fqdn, CtdlGetConfigStr("c_nodename"))) return(hostalias_localhost);
if (inetcfg == NULL) return(hostalias_nomatch);
config_lines = num_tokens(inetcfg, '\n');
for (i=0; i<config_lines; ++i) {
extract_token(buf, inetcfg, i, '\n', sizeof buf);
extract_token(host, buf, 0, '|', sizeof host);
extract_token(type, buf, 1, '|', sizeof type);
found = 0;
/* Process these in a specific order, in case there are multiple matches.
* We want localhost to override masq, for example.
*/
if ( (!strcasecmp(type, "masqdomain")) && (!strcasecmp(fqdn, host))) {
found = hostalias_masq;
}
if ( (!strcasecmp(type, "localhost")) && (!strcasecmp(fqdn, host))) {
found = hostalias_localhost;
}
// "directory" used to be a distributed version of "localhost" but they're both the same now
if ( (!strcasecmp(type, "directory")) && (!strcasecmp(fqdn, host))) {
found = hostalias_localhost;
}
if (found) return(found);
}
return(hostalias_nomatch);
}
/*
* Determine whether a given Internet address belongs to the current user
*/
int CtdlIsMe(char *addr, int addr_buf_len)
{
recptypes *recp;
int i;
recp = validate_recipients(addr, NULL, 0);
if (recp == NULL) return(0);
if (recp->num_local == 0) {
free_recipients(recp);
return(0);
}
for (i=0; i<recp->num_local; ++i) {
extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
if (!strcasecmp(addr, CC->user.fullname)) {
free_recipients(recp);
return(1);
}
}
free_recipients(recp);
return(0);
}
/* If the last item in a list of recipients was truncated to a partial address,
* remove it completely in order to avoid choking libSieve
*/
void sanitize_truncated_recipient(char *str)
{
if (!str) return;
if (num_tokens(str, ',') < 2) return;
int len = strlen(str);
if (len < 900) return;
if (len > 998) str[998] = 0;
char *cptr = strrchr(str, ',');
if (!cptr) return;
char *lptr = strchr(cptr, '<');
char *rptr = strchr(cptr, '>');
if ( (lptr) && (rptr) && (rptr > lptr) ) return;
*cptr = 0;
}
/*
* This function is self explanatory.
* (What can I say, I'm in a weird mood today...)
*/
void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
{
unsigned int i;
for (i = 0; i < strlen(name); ++i) {
if (name[i] == '@') {
while (isspace(name[i - 1]) && i > 0) {
strcpy(&name[i - 1], &name[i]);
--i;
}
while (isspace(name[i + 1])) {
strcpy(&name[i + 1], &name[i + 2]);
}
}
}
}
/*
* Aliasing for network mail.
*/
int alias(char *name)
{ /* process alias and routing info for mail */
FILE *fp;
int a, i;
char aaa[SIZ], bbb[SIZ];
char *ignetcfg = NULL;
char *ignetmap = NULL;
int at = 0;
char node[64];
char testnode[64];
char buf[SIZ];
char original_name[256];
safestrncpy(original_name, name, sizeof original_name);
striplt(name);
remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
stripallbut(name, '<', '>');
fp = fopen(file_mail_aliases, "r"); // when are we going to get rid of this?
if (fp == NULL) {
fp = fopen("/dev/null", "r");
}
if (fp == NULL) {
return (MES_ERROR);
}
strcpy(aaa, "");
strcpy(bbb, "");
while (fgets(aaa, sizeof aaa, fp) != NULL) {
while (isspace(name[0]))
strcpy(name, &name[1]);
aaa[strlen(aaa) - 1] = 0;
strcpy(bbb, "");
for (a = 0; aaa[a] != '\0'; ++a) {
if (aaa[a] == ',') {
strcpy(bbb, &aaa[a + 1]);
aaa[a] = 0;
break;
}
}
if (!strcasecmp(name, aaa))
strcpy(name, bbb);
}
fclose(fp);
/* Hit the email address directory */
if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
strcpy(name, aaa);
}
if (strcasecmp(original_name, name)) {
syslog(LOG_INFO, "internet_addressing: %s is being forwarded to %s", original_name, name);
}
/* Change "user @ xxx" to "user" if xxx is an alias for this host */
for (a=0; name[a] != '\0'; ++a) {
if (name[a] == '@') {
if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
name[a] = 0;
syslog(LOG_DEBUG, "internet_addressing: changed to <%s>", name);
break;
}
}
}
/* determine local or remote type, see citadel.h */
at = haschar(name, '@');
if (at == 0) return(MES_LOCAL); /* no @'s - local address */
if (at > 1) return(MES_ERROR); /* >1 @'s - invalid address */
remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
/* figure out the delivery mode */
extract_token(node, name, 1, '@', sizeof node);
/* If there are one or more dots in the nodename, we assume that it
* is an FQDN and will attempt SMTP delivery to the Internet.
*/
if (haschar(node, '.') > 0) {
return(MES_INTERNET);
}
/* Otherwise we look in the IGnet maps for a valid Citadel node.
* Try directly-connected nodes first...
*/
ignetcfg = CtdlGetSysConfig(IGNETCFG);
for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
extract_token(buf, ignetcfg, i, '\n', sizeof buf);
extract_token(testnode, buf, 0, '|', sizeof testnode);
if (!strcasecmp(node, testnode)) {
free(ignetcfg);
return(MES_IGNET);
}
}
free(ignetcfg);
/*
* Then try nodes that are two or more hops away.
*/
ignetmap = CtdlGetSysConfig(IGNETMAP);
for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
extract_token(buf, ignetmap, i, '\n', sizeof buf);
extract_token(testnode, buf, 0, '|', sizeof testnode);
if (!strcasecmp(node, testnode)) {
free(ignetmap);
return(MES_IGNET);
}
}
free(ignetmap);
/* If we get to this point it's an invalid node name */
return (MES_ERROR);
}
/*
* Validate recipients, count delivery types and errors, and handle aliasing
* FIXME check for dupes!!!!!
*
* Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
* were specified, or the number of addresses found invalid.
*
* Caller needs to free the result using free_recipients()
*/
recptypes *validate_recipients(const char *supplied_recipients, const char *RemoteIdentifier, int Flags)
{
struct CitContext *CCC = CC;
recptypes *ret;
char *recipients = NULL;
char *org_recp;
char this_recp[256];
char this_recp_cooked[256];
char append[SIZ];
long len;
int num_recps = 0;
int i, j;
int mailtype;
int invalid;
struct ctdluser tempUS;
struct ctdlroom tempQR;
struct ctdlroom tempQR2;
int err = 0;
char errmsg[SIZ];
int in_quotes = 0;
/* Initialize */
ret = (recptypes *) malloc(sizeof(recptypes));
if (ret == NULL) return(NULL);
/* Set all strings to null and numeric values to zero */
memset(ret, 0, sizeof(recptypes));
if (supplied_recipients == NULL) {
recipients = strdup("");
}
else {
recipients = strdup(supplied_recipients);
}
/* Allocate some memory. Yes, this allocates 500% more memory than we will
* actually need, but it's healthier for the heap than doing lots of tiny
* realloc() calls instead.
*/
len = strlen(recipients) + 1024;
ret->errormsg = malloc(len);
ret->recp_local = malloc(len);
ret->recp_internet = malloc(len);
ret->recp_ignet = malloc(len);
ret->recp_room = malloc(len);
ret->display_recp = malloc(len);
ret->recp_orgroom = malloc(len);
org_recp = malloc(len);
ret->errormsg[0] = 0;
ret->recp_local[0] = 0;
ret->recp_internet[0] = 0;
ret->recp_ignet[0] = 0;
ret->recp_room[0] = 0;
ret->recp_orgroom[0] = 0;
ret->display_recp[0] = 0;
ret->recptypes_magic = RECPTYPES_MAGIC;
/* Change all valid separator characters to commas */
for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
if ((recipients[i] == ';') || (recipients[i] == '|')) {
recipients[i] = ',';
}
}
/* Now start extracting recipients... */
while (!IsEmptyStr(recipients)) {
for (i=0; i<=strlen(recipients); ++i) {
if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
safestrncpy(this_recp, recipients, i+1);
this_recp[i] = 0;
if (recipients[i] == ',') {
strcpy(recipients, &recipients[i+1]);
}
else {
strcpy(recipients, "");
}
break;
}
}
striplt(this_recp);
if (IsEmptyStr(this_recp))
break;
syslog(LOG_DEBUG, "internet_addressing: evaluating recipient #%d: %s", num_recps, this_recp);
++num_recps;
strcpy(org_recp, this_recp);
alias(this_recp);
alias(this_recp);
mailtype = alias(this_recp);
for (j = 0; !IsEmptyStr(&this_recp[j]); ++j) {
if (this_recp[j]=='_') {
this_recp_cooked[j] = ' ';
}
else {
this_recp_cooked[j] = this_recp[j];
}
}
this_recp_cooked[j] = '\0';
invalid = 0;
errmsg[0] = 0;
switch(mailtype) {
case MES_LOCAL:
if (!strcasecmp(this_recp, "sysop")) {
++ret->num_room;
strcpy(this_recp, CtdlGetConfigStr("c_aideroom"));
if (!IsEmptyStr(ret->recp_room)) {
strcat(ret->recp_room, "|");
}
strcat(ret->recp_room, this_recp);
}
else if ( (!strncasecmp(this_recp, "room_", 5))
&& (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
/* Save room so we can restore it later */
tempQR2 = CCC->room;
CCC->room = tempQR;
/* Check permissions to send mail to this room */
err = CtdlDoIHavePermissionToPostInThisRoom(
errmsg,
sizeof errmsg,
RemoteIdentifier,
Flags,
0 /* 0 = not a reply */
);
if (err)
{
++ret->num_error;
invalid = 1;
}
else {
++ret->num_room;
if (!IsEmptyStr(ret->recp_room)) {
strcat(ret->recp_room, "|");
}
strcat(ret->recp_room, &this_recp_cooked[5]);
if (!IsEmptyStr(ret->recp_orgroom)) {
strcat(ret->recp_orgroom, "|");
}
strcat(ret->recp_orgroom, org_recp);
}
/* Restore room in case something needs it */
CCC->room = tempQR2;
}
else if (CtdlGetUser(&tempUS, this_recp) == 0) {
++ret->num_local;
strcpy(this_recp, tempUS.fullname);
if (!IsEmptyStr(ret->recp_local)) {
strcat(ret->recp_local, "|");
}
strcat(ret->recp_local, this_recp);
}
else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
++ret->num_local;
strcpy(this_recp, tempUS.fullname);
if (!IsEmptyStr(ret->recp_local)) {
strcat(ret->recp_local, "|");
}
strcat(ret->recp_local, this_recp);
}
else {
++ret->num_error;
invalid = 1;
}
break;
case MES_INTERNET:
/* Yes, you're reading this correctly: if the target
* domain points back to the local system,
* the address is invalid. That's
* because if the address were valid, we would have
* already translated it to a local address by now.
*/
if (IsDirectory(this_recp, 0)) {
++ret->num_error;
invalid = 1;
}
else {
++ret->num_internet;
if (!IsEmptyStr(ret->recp_internet)) {
strcat(ret->recp_internet, "|");
}
strcat(ret->recp_internet, this_recp);
}
break;
case MES_IGNET:
++ret->num_ignet;
if (!IsEmptyStr(ret->recp_ignet)) {
strcat(ret->recp_ignet, "|");
}
strcat(ret->recp_ignet, this_recp);
break;
case MES_ERROR:
++ret->num_error;
invalid = 1;
break;
}
if (invalid) {
if (IsEmptyStr(errmsg)) {
snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
}
else {
snprintf(append, sizeof append, "%s", errmsg);
}
if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
if (!IsEmptyStr(ret->errormsg)) {
strcat(ret->errormsg, "; ");
}
strcat(ret->errormsg, append);
}
}
else {
if (IsEmptyStr(ret->display_recp)) {
strcpy(append, this_recp);
}
else {
snprintf(append, sizeof append, ", %s", this_recp);
}
if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
strcat(ret->display_recp, append);
}
}
}
free(org_recp);
if ((ret->num_local + ret->num_internet + ret->num_ignet +
ret->num_room + ret->num_error) == 0) {
ret->num_error = (-1);
strcpy(ret->errormsg, "No recipients specified.");
}
syslog(LOG_DEBUG, "internet_addressing: validate_recipients() = %d local, %d room, %d SMTP, %d IGnet, %d error",
ret->num_local, ret->num_room, ret->num_internet, ret->num_ignet, ret->num_error
);
free(recipients);
return(ret);
}
/*
* Destructor for recptypes
*/
void free_recipients(recptypes *valid) {
if (valid == NULL) {
return;
}
if (valid->recptypes_magic != RECPTYPES_MAGIC) {
syslog(LOG_ERR, "internet_addressing: attempt to call free_recipients() on some other data type!");
abort();
}
if (valid->errormsg != NULL) free(valid->errormsg);
if (valid->recp_local != NULL) free(valid->recp_local);
if (valid->recp_internet != NULL) free(valid->recp_internet);
if (valid->recp_ignet != NULL) free(valid->recp_ignet);
if (valid->recp_room != NULL) free(valid->recp_room);
if (valid->recp_orgroom != NULL) free(valid->recp_orgroom);
if (valid->display_recp != NULL) free(valid->display_recp);
if (valid->bounce_to != NULL) free(valid->bounce_to);
if (valid->envelope_from != NULL) free(valid->envelope_from);
if (valid->sending_room != NULL) free(valid->sending_room);
free(valid);
}
char *qp_encode_email_addrs(char *source)
{
char *user, *node, *name;
const char headerStr[] = "=?UTF-8?Q?";
char *Encoded;
char *EncodedName;
char *nPtr;
int need_to_encode = 0;
long SourceLen;
long EncodedMaxLen;
long nColons = 0;
long *AddrPtr;
long *AddrUtf8;
long nAddrPtrMax = 50;
long nmax;
int InQuotes = 0;
int i, n;
if (source == NULL) return source;
if (IsEmptyStr(source)) return source;
syslog(LOG_DEBUG, "internet_addressing: qp_encode_email_addrs <%s>", source);
AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
*AddrPtr = 0;
i = 0;
while (!IsEmptyStr (&source[i])) {
if (nColons >= nAddrPtrMax){
long *ptr;
ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
free (AddrPtr), AddrPtr = ptr;
ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
memset(&ptr[nAddrPtrMax], 0,
sizeof (long) * nAddrPtrMax);
memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
free (AddrUtf8), AddrUtf8 = ptr;
nAddrPtrMax *= 2;
}
if (((unsigned char) source[i] < 32) ||
((unsigned char) source[i] > 126)) {
need_to_encode = 1;
AddrUtf8[nColons] = 1;
}
if (source[i] == '"')
InQuotes = !InQuotes;
if (!InQuotes && source[i] == ',') {
AddrPtr[nColons] = i;
nColons++;
}
i++;
}
if (need_to_encode == 0) {
free(AddrPtr);
free(AddrUtf8);
return source;
}
SourceLen = i;
EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
Encoded = (char*) malloc (EncodedMaxLen);
for (i = 0; i < nColons; i++) {
source[AddrPtr[i]++] = '\0';
}
/* TODO: if libidn, this might get larger*/
user = malloc(SourceLen + 1);
node = malloc(SourceLen + 1);
name = malloc(SourceLen + 1);
nPtr = Encoded;
*nPtr = '\0';
for (i = 0; i < nColons && nPtr != NULL; i++) {
nmax = EncodedMaxLen - (nPtr - Encoded);
if (AddrUtf8[i]) {
process_rfc822_addr(&source[AddrPtr[i]],
user,
node,
name);
/* TODO: libIDN here ! */
if (IsEmptyStr(name)) {
n = snprintf(nPtr, nmax,
(i==0)?"%s@%s" : ",%s@%s",
user, node);
}
else {
EncodedName = rfc2047encode(name, strlen(name));
n = snprintf(nPtr, nmax,
(i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
EncodedName, user, node);
free(EncodedName);
}
}
else {
n = snprintf(nPtr, nmax,
(i==0)?"%s" : ",%s",
&source[AddrPtr[i]]);
}
if (n > 0 )
nPtr += n;
else {
char *ptr, *nnPtr;
ptr = (char*) malloc(EncodedMaxLen * 2);
memcpy(ptr, Encoded, EncodedMaxLen);
nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
free(Encoded), Encoded = ptr;
EncodedMaxLen *= 2;
i--; /* do it once more with properly lengthened buffer */
}
}
for (i = 0; i < nColons; i++)
source[--AddrPtr[i]] = ',';
free(user);
free(node);
free(name);
free(AddrUtf8);
free(AddrPtr);
return Encoded;
}
/*
* Unfold a multi-line field into a single line, removing multi-whitespaces
*/
void unfold_rfc822_field(char **field, char **FieldEnd)
{
int quote = 0;
char *pField = *field;
char *sField;
char *pFieldEnd = *FieldEnd;
while (isspace(*pField))
pField++;
/* remove leading/trailing whitespace */
;
while (isspace(*pFieldEnd))
pFieldEnd --;
*FieldEnd = pFieldEnd;
/* convert non-space whitespace to spaces, and remove double blanks */
for (sField = *field = pField;
sField < pFieldEnd;
pField++, sField++)
{
if ((*sField=='\r') || (*sField=='\n'))
{
int Offset = 1;
while (((*(sField + Offset) == '\r') ||
(*(sField + Offset) == '\n') ||
(isspace(*(sField + Offset)))) &&
(sField + Offset < pFieldEnd))
Offset ++;
sField += Offset;
*pField = *sField;
}
else {
if (*sField=='\"') quote = 1 - quote;
if (!quote) {
if (isspace(*sField))
{
*pField = ' ';
pField++;
sField++;
while ((sField < pFieldEnd) &&
isspace(*sField))
sField++;
*pField = *sField;
}
else *pField = *sField;
}
else *pField = *sField;
}
}
*pField = '\0';
*FieldEnd = pField - 1;
}
/*
* Split an RFC822-style address into userid, host, and full name
*
*/
void process_rfc822_addr(const char *rfc822, char *user, char *node, char *name)
{
int a;
strcpy(user, "");
strcpy(node, CtdlGetConfigStr("c_fqdn"));
strcpy(name, "");
if (rfc822 == NULL) return;
/* extract full name - first, it's From minus <userid> */
strcpy(name, rfc822);
stripout(name, '<', '>');
/* strip anything to the left of a bang */
while ((!IsEmptyStr(name)) && (haschar(name, '!') > 0))
strcpy(name, &name[1]);
/* and anything to the right of a @ or % */
for (a = 0; name[a] != '\0'; ++a) {
if (name[a] == '@') {
name[a] = 0;
break;
}
if (name[a] == '%') {
name[a] = 0;
break;
}
}
/* but if there are parentheses, that changes the rules... */
if ((haschar(rfc822, '(') == 1) && (haschar(rfc822, ')') == 1)) {
strcpy(name, rfc822);
stripallbut(name, '(', ')');
}
/* but if there are a set of quotes, that supersedes everything */
if (haschar(rfc822, 34) == 2) {
strcpy(name, rfc822);
while ((!IsEmptyStr(name)) && (name[0] != 34)) {
strcpy(&name[0], &name[1]);
}
strcpy(&name[0], &name[1]);
for (a = 0; name[a] != '\0'; ++a)
if (name[a] == 34) {
name[a] = 0;
break;
}
}
/* extract user id */
strcpy(user, rfc822);
/* first get rid of anything in parens */
stripout(user, '(', ')');
/* if there's a set of angle brackets, strip it down to that */
if ((haschar(user, '<') == 1) && (haschar(user, '>') == 1)) {
stripallbut(user, '<', '>');
}
/* strip anything to the left of a bang */
while ((!IsEmptyStr(user)) && (haschar(user, '!') > 0))
strcpy(user, &user[1]);
/* and anything to the right of a @ or % */
for (a = 0; user[a] != '\0'; ++a) {
if (user[a] == '@') {
user[a] = 0;
break;
}
if (user[a] == '%') {
user[a] = 0;
break;
}
}
/* extract node name */
strcpy(node, rfc822);
/* first get rid of anything in parens */
stripout(node, '(', ')');
/* if there's a set of angle brackets, strip it down to that */
if ((haschar(node, '<') == 1) && (haschar(node, '>') == 1)) {
stripallbut(node, '<', '>');
}
/* If no node specified, tack ours on instead */
if (
(haschar(node, '@')==0)
&& (haschar(node, '%')==0)
&& (haschar(node, '!')==0)
) {
strcpy(node, CtdlGetConfigStr("c_nodename"));
}
else {
/* strip anything to the left of a @ */
while ((!IsEmptyStr(node)) && (haschar(node, '@') > 0))
strcpy(node, &node[1]);
/* strip anything to the left of a % */
while ((!IsEmptyStr(node)) && (haschar(node, '%') > 0))
strcpy(node, &node[1]);
/* reduce multiple system bang paths to node!user */
while ((!IsEmptyStr(node)) && (haschar(node, '!') > 1))
strcpy(node, &node[1]);
/* now get rid of the user portion of a node!user string */
for (a = 0; node[a] != '\0'; ++a)
if (node[a] == '!') {
node[a] = 0;
break;
}
}
/* strip leading and trailing spaces in all strings */
striplt(user);
striplt(node);
striplt(name);
/* If we processed a string that had the address in angle brackets
* but no name outside the brackets, we now have an empty name. In
* this case, use the user portion of the address as the name.
*/
if ((IsEmptyStr(name)) && (!IsEmptyStr(user))) {
strcpy(name, user);
}
}
/*
* convert_field() is a helper function for convert_internet_message().
* Given start/end positions for an rfc822 field, it converts it to a Citadel
* field if it wants to, and unfolds it if necessary.
*
* Returns 1 if the field was converted and inserted into the Citadel message
* structure, implying that the source field should be removed from the
* message text.
*/
int convert_field(struct CtdlMessage *msg, const char *beg, const char *end) {
char *key, *value, *valueend;
long len;
const char *pos;
int i;
const char *colonpos = NULL;
int processed = 0;
char user[1024];
char node[1024];
char name[1024];
char addr[1024];
time_t parsed_date;
long valuelen;
for (pos = end; pos >= beg; pos--) {
if (*pos == ':') colonpos = pos;
}
if (colonpos == NULL) return(0); /* no colon? not a valid header line */
len = end - beg;
key = malloc(len + 2);
memcpy(key, beg, len + 1);
key[len] = '\0';
valueend = key + len;
* ( key + (colonpos - beg) ) = '\0';
value = &key[(colonpos - beg) + 1];
/* printf("Header: [%s]\nValue: [%s]\n", key, value); */
unfold_rfc822_field(&value, &valueend);
valuelen = valueend - value + 1;
/* printf("UnfoldedValue: [%s]\n", value); */
/*
* Here's the big rfc822-to-citadel loop.
*/
/* Date/time is converted into a unix timestamp. If the conversion
* fails, we replace it with the time the message arrived locally.
*/
if (!strcasecmp(key, "Date")) {
parsed_date = parsedate(value);
if (parsed_date < 0L) parsed_date = time(NULL);
if (CM_IsEmpty(msg, eTimestamp))
CM_SetFieldLONG(msg, eTimestamp, parsed_date);
processed = 1;
}
else if (!strcasecmp(key, "From")) {
process_rfc822_addr(value, user, node, name);
syslog(LOG_DEBUG, "internet_addressing: converted to <%s@%s> (%s)", user, node, name);
snprintf(addr, sizeof(addr), "%s@%s", user, node);
if (CM_IsEmpty(msg, eAuthor) && !IsEmptyStr(name))
CM_SetField(msg, eAuthor, name, strlen(name));
if (CM_IsEmpty(msg, erFc822Addr) && !IsEmptyStr(addr))
CM_SetField(msg, erFc822Addr, addr, strlen(addr));
processed = 1;
}
else if (!strcasecmp(key, "Subject")) {
if (CM_IsEmpty(msg, eMsgSubject))
CM_SetField(msg, eMsgSubject, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "List-ID")) {
if (CM_IsEmpty(msg, eListID))
CM_SetField(msg, eListID, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "To")) {
if (CM_IsEmpty(msg, eRecipient))
CM_SetField(msg, eRecipient, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "CC")) {
if (CM_IsEmpty(msg, eCarbonCopY))
CM_SetField(msg, eCarbonCopY, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "Message-ID")) {
if (!CM_IsEmpty(msg, emessageId)) {
syslog(LOG_WARNING, "internet_addressing: duplicate message id");
}
else {
char *pValue;
long pValueLen;
pValue = value;
pValueLen = valuelen;
/* Strip angle brackets */
while (haschar(pValue, '<') > 0) {
pValue ++;
pValueLen --;
}
for (i = 0; i <= pValueLen; ++i)
if (pValue[i] == '>') {
pValueLen = i;
break;
}
CM_SetField(msg, emessageId, pValue, pValueLen);
}
processed = 1;
}
else if (!strcasecmp(key, "Return-Path")) {
if (CM_IsEmpty(msg, eMessagePath))
CM_SetField(msg, eMessagePath, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "Envelope-To")) {
if (CM_IsEmpty(msg, eenVelopeTo))
CM_SetField(msg, eenVelopeTo, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "References")) {
CM_SetField(msg, eWeferences, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "Reply-To")) {
CM_SetField(msg, eReplyTo, value, valuelen);
processed = 1;
}
else if (!strcasecmp(key, "In-reply-to")) {
if (CM_IsEmpty(msg, eWeferences)) /* References: supersedes In-reply-to: */
CM_SetField(msg, eWeferences, value, valuelen);
processed = 1;
}
/* Clean up and move on. */
free(key); /* Don't free 'value', it's actually the same buffer */
return processed;
}
/*
* Convert RFC822 references format (References) to Citadel references format (Weferences)
*/
void convert_references_to_wefewences(char *str) {
int bracket_nesting = 0;
char *ptr = str;
char *moveptr = NULL;
char ch;
while(*ptr) {
ch = *ptr;
if (ch == '>') {
--bracket_nesting;
if (bracket_nesting < 0) bracket_nesting = 0;
}
if ((ch == '>') && (bracket_nesting == 0) && (*(ptr+1)) && (ptr>str) ) {
*ptr = '|';
++ptr;
}
else if (bracket_nesting > 0) {
++ptr;
}
else {
moveptr = ptr;
while (*moveptr) {
*moveptr = *(moveptr+1);
++moveptr;
}
}
if (ch == '<') ++bracket_nesting;
}
}
/*
* Convert an RFC822 message (headers + body) to a CtdlMessage structure.
* NOTE: the supplied buffer becomes part of the CtdlMessage structure, and
* will be deallocated when CM_Free() is called. Therefore, the
* supplied buffer should be DEREFERENCED. It should not be freed or used
* again.
*/
struct CtdlMessage *convert_internet_message(char *rfc822) {
StrBuf *RFCBuf = NewStrBufPlain(rfc822, -1);
free (rfc822);
return convert_internet_message_buf(&RFCBuf);
}
struct CtdlMessage *convert_internet_message_buf(StrBuf **rfc822)
{
struct CtdlMessage *msg;
const char *pos, *beg, *end, *totalend;
int done, alldone = 0;
int converted;
StrBuf *OtherHeaders;
msg = malloc(sizeof(struct CtdlMessage));
if (msg == NULL) return msg;
memset(msg, 0, sizeof(struct CtdlMessage));
msg->cm_magic = CTDLMESSAGE_MAGIC; /* self check */
msg->cm_anon_type = 0; /* never anonymous */
msg->cm_format_type = FMT_RFC822; /* internet message */
pos = ChrPtr(*rfc822);
totalend = pos + StrLength(*rfc822);
done = 0;
OtherHeaders = NewStrBufPlain(NULL, StrLength(*rfc822));
while (!alldone) {
/* Locate beginning and end of field, keeping in mind that
* some fields might be multiline
*/
end = beg = pos;
while ((end < totalend) &&
(end == beg) &&
(done == 0) )
{
if ( (*pos=='\n') && ((*(pos+1))!=0x20) && ((*(pos+1))!=0x09) )
{
end = pos;
}
/* done with headers? */
if ((*pos=='\n') &&
( (*(pos+1)=='\n') ||
(*(pos+1)=='\r')) )
{
alldone = 1;
}
if (pos >= (totalend - 1) )
{
end = pos;
done = 1;
}
++pos;
}
/* At this point we have a field. Are we interested in it? */
converted = convert_field(msg, beg, end);
/* Strip the field out of the RFC822 header if we used it */
if (!converted) {
StrBufAppendBufPlain(OtherHeaders, beg, end - beg, 0);
StrBufAppendBufPlain(OtherHeaders, HKEY("\n"), 0);
}
/* If we've hit the end of the message, bail out */
if (pos >= totalend)
alldone = 1;
}
StrBufAppendBufPlain(OtherHeaders, HKEY("\n"), 0);
if (pos < totalend)
StrBufAppendBufPlain(OtherHeaders, pos, totalend - pos, 0);
FreeStrBuf(rfc822);
CM_SetAsFieldSB(msg, eMesageText, &OtherHeaders);
/* Follow-up sanity checks... */
/* If there's no timestamp on this message, set it to now. */
if (CM_IsEmpty(msg, eTimestamp)) {
CM_SetFieldLONG(msg, eTimestamp, time(NULL));
}
/* If a W (references, or rather, Wefewences) field is present, we
* have to convert it from RFC822 format to Citadel format.
*/
if (!CM_IsEmpty(msg, eWeferences)) {
/// todo: API!
convert_references_to_wefewences(msg->cm_fields[eWeferences]);
}
return msg;
}
/*
* Look for a particular header field in an RFC822 message text. If the
* requested field is found, it is unfolded (if necessary) and returned to
* the caller. The field name is stripped out, leaving only its contents.
* The caller is responsible for freeing the returned buffer. If the requested
* field is not present, or anything else goes wrong, it returns NULL.
*/
char *rfc822_fetch_field(const char *rfc822, const char *fieldname) {
char *fieldbuf = NULL;
const char *end_of_headers;
const char *field_start;
const char *ptr;
char *cont;
char fieldhdr[SIZ];
/* Should never happen, but sometimes we get stupid */
if (rfc822 == NULL) return(NULL);
if (fieldname == NULL) return(NULL);
snprintf(fieldhdr, sizeof fieldhdr, "%s:", fieldname);
/* Locate the end of the headers, so we don't run past that point */
end_of_headers = cbmstrcasestr(rfc822, "\n\r\n");
if (end_of_headers == NULL) {
end_of_headers = cbmstrcasestr(rfc822, "\n\n");
}
if (end_of_headers == NULL) return (NULL);
field_start = cbmstrcasestr(rfc822, fieldhdr);
if (field_start == NULL) return(NULL);
if (field_start > end_of_headers) return(NULL);
fieldbuf = malloc(SIZ);
strcpy(fieldbuf, "");
ptr = field_start;
ptr = cmemreadline(ptr, fieldbuf, SIZ-strlen(fieldbuf) );
while ( (isspace(ptr[0])) && (ptr < end_of_headers) ) {
strcat(fieldbuf, " ");
cont = &fieldbuf[strlen(fieldbuf)];
ptr = cmemreadline(ptr, cont, SIZ-strlen(fieldbuf) );
striplt(cont);
}
strcpy(fieldbuf, &fieldbuf[strlen(fieldhdr)]);
striplt(fieldbuf);
return(fieldbuf);
}
/*****************************************************************************
* DIRECTORY MANAGEMENT FUNCTIONS *
*****************************************************************************/
/*
* Generate the index key for an Internet e-mail address to be looked up
* in the database.
*/
void directory_key(char *key, char *addr) {
int i;
int keylen = 0;
for (i=0; !IsEmptyStr(&addr[i]); ++i) {
if (!isspace(addr[i])) {
key[keylen++] = tolower(addr[i]);
}
}
key[keylen++] = 0;
syslog(LOG_DEBUG, "internet_addressing: directory key is <%s>", key);
}
/* Return nonzero if the supplied address is in one of "our" domains
*/
int IsDirectory(char *addr, int allow_masq_domains) {
char domain[256];
int h;
extract_token(domain, addr, 1, '@', sizeof domain);
striplt(domain);
h = CtdlHostAlias(domain);
if ( (h == hostalias_masq) && allow_masq_domains)
return(1);
if (h == hostalias_localhost) {
return(1);
}
else {
return(0);
}
}
/*
* Add an Internet e-mail address to the directory for a user
*/
int CtdlDirectoryAddUser(char *internet_addr, char *citadel_addr) {
char key[SIZ];
if (IsDirectory(internet_addr, 0) == 0) {
return 0;
}
syslog(LOG_DEBUG, "internet_addressing: create directory entry: %s --> %s", internet_addr, citadel_addr);
directory_key(key, internet_addr);
cdb_store(CDB_DIRECTORY, key, strlen(key), citadel_addr, strlen(citadel_addr)+1 );
return 1;
}
/*
* Delete an Internet e-mail address from the directory.
*
* (NOTE: we don't actually use or need the citadel_addr variable; it's merely
* here because the callback API expects to be able to send it.)
*/
int CtdlDirectoryDelUser(char *internet_addr, char *citadel_addr) {
char key[SIZ];
syslog(LOG_DEBUG, "internet_addressing: delete directory entry: %s --> %s", internet_addr, citadel_addr);
directory_key(key, internet_addr);
return cdb_delete(CDB_DIRECTORY, key, strlen(key) ) == 0;
}
/*
* Look up an Internet e-mail address in the directory.
* On success: returns 0, and Citadel address stored in 'target'
* On failure: returns nonzero
*/
int CtdlDirectoryLookup(char *target, char *internet_addr, size_t targbuflen) {
struct cdbdata *cdbrec;
char key[SIZ];
/* Dump it in there unchanged, just for kicks */
safestrncpy(target, internet_addr, targbuflen);
/* Only do lookups for addresses with hostnames in them */
if (num_tokens(internet_addr, '@') != 2) return(-1);
/* Only do lookups for domains in the directory */
if (IsDirectory(internet_addr, 0) == 0) return(-1);
directory_key(key, internet_addr);
cdbrec = cdb_fetch(CDB_DIRECTORY, key, strlen(key) );
if (cdbrec != NULL) {
safestrncpy(target, cdbrec->ptr, targbuflen);
cdb_free(cdbrec);
return(0);
}
return(-1);
}
/*
* Harvest any email addresses that someone might want to have in their
* "collected addresses" book.
*/
char *harvest_collected_addresses(struct CtdlMessage *msg) {
char *coll = NULL;
char addr[256];
char user[256], node[256], name[256];
int is_harvestable;
int i, j, h;
eMsgField field = 0;
if (msg == NULL) return(NULL);
is_harvestable = 1;
strcpy(addr, "");
if (!CM_IsEmpty(msg, eAuthor)) {
strcat(addr, msg->cm_fields[eAuthor]);
}
if (!CM_IsEmpty(msg, erFc822Addr)) {
strcat(addr, " <");
strcat(addr, msg->cm_fields[erFc822Addr]);
strcat(addr, ">");
if (IsDirectory(msg->cm_fields[erFc822Addr], 0)) {
is_harvestable = 0;
}
}
if (is_harvestable) {
coll = strdup(addr);
}
else {
coll = strdup("");
}
if (coll == NULL) return(NULL);
/* Scan both the R (To) and Y (CC) fields */
for (i = 0; i < 2; ++i) {
if (i == 0) field = eRecipient;
if (i == 1) field = eCarbonCopY;
if (!CM_IsEmpty(msg, field)) {
for (j=0; j<num_tokens(msg->cm_fields[field], ','); ++j) {
extract_token(addr, msg->cm_fields[field], j, ',', sizeof addr);
if (strstr(addr, "=?") != NULL)
utf8ify_rfc822_string(addr);
process_rfc822_addr(addr, user, node, name);
h = CtdlHostAlias(node);
if (h != hostalias_localhost) {
coll = realloc(coll, strlen(coll) + strlen(addr) + 4);
if (coll == NULL) return(NULL);
if (!IsEmptyStr(coll)) {
strcat(coll, ",");
}
striplt(addr);
strcat(coll, addr);
}
}
}
}
if (IsEmptyStr(coll)) {
free(coll);
return(NULL);
}
return(coll);
}
/*
* Helper function for CtdlRebuildDirectoryIndex()
*
* Call this function as a ForEachUser backend in order to queue up
* user names, or call it with a null user to make it do the processing.
* This allows us to maintain the list as a static instead of passing
* pointers around.
*/
void CtdlRebuildDirectoryIndex_backend(struct ctdluser *usbuf, void *data) {
struct crdib {
char name[64];
char emails[512];
};
static struct crdib *e = NULL;
static int num_e = 0;
static int alloc_e = 0;
/* this is the calling mode where we add a user */
if (usbuf != NULL) {
if (num_e >= alloc_e) {
if (alloc_e == 0) {
alloc_e = 100;
e = malloc(sizeof(struct crdib) * alloc_e);
}
else {
alloc_e *= 2;
e = realloc(e, (sizeof(struct crdib) * alloc_e));
}
}
strcpy(e[num_e].name, usbuf->fullname);
strcpy(e[num_e].emails, usbuf->emailaddrs);
++num_e;
return;
}
/* this is the calling mode where we do the processing */
int i, j;
for (i=0; i<num_e; ++i) {
if ( (!IsEmptyStr(e[i].name)) && (!IsEmptyStr(e[i].emails)) ) {
for (j=0; j<num_tokens(e[i].emails, '|'); ++j) {
char one_email[512];
extract_token(one_email, e[i].emails, j, '|', sizeof one_email);
CtdlDirectoryAddUser(one_email, e[i].name);
}
}
}
free(e);
num_e = 0;
alloc_e = 0;
return;
}
/*
* Initialize the directory database (erasing anything already there)
*/
void CtdlRebuildDirectoryIndex(void) {
syslog(LOG_INFO, "internet_addressing: rebuilding email address directory index");
cdb_trunc(CDB_DIRECTORY);
ForEachUser(CtdlRebuildDirectoryIndex_backend, NULL);
CtdlRebuildDirectoryIndex_backend(NULL, NULL);
}
/*
* Configure Internet email addresses for a user account, updating the Directory Index in the process
*/
void CtdlSetEmailAddressesForUser(char *requested_user, char *new_emailaddrs)
{
struct ctdluser usbuf;
int i;
char buf[SIZ];
if (CtdlGetUserLock(&usbuf, requested_user) != 0) { // We are relying on the fact that the DirectoryIndex functions don't lock.
return; // Silently fail here if we can't acquire a lock on the user record.
}
syslog(LOG_DEBUG, "internet_addressing: setting email addresses for <%s> to <%s>", usbuf.fullname, new_emailaddrs);
/* Delete all of the existing directory index records for the user (easier this way) */
for (i=0; i<num_tokens(usbuf.emailaddrs, '|'); ++i) {
extract_token(buf, usbuf.emailaddrs, i, '|', sizeof buf);
CtdlDirectoryDelUser(buf, requested_user);
}
strcpy(usbuf.emailaddrs, new_emailaddrs); // make it official.
/* Index all of the new email addresses (they've already been sanitized) */
for (i=0; i<num_tokens(usbuf.emailaddrs, '|'); ++i) {
extract_token(buf, usbuf.emailaddrs, i, '|', sizeof buf);
CtdlDirectoryAddUser(buf, requested_user);
}
CtdlPutUserLock(&usbuf);
}
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