+++ /dev/null
-// This file contains functions which handle the mapping of Internet addresses
-// to users on the Citadel system.
-//
-// Copyright (c) 1987-2022 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>
-
-// This is the non-define version in case it is needed for debugging
-#if 0
-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
-
-
-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) {
- struct 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 library functions.
-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) {
- char *ptr;
- if (!name) return;
-
- for (ptr=name; *ptr; ++ptr) {
- while ( (isspace(*ptr)) && (*(ptr+1)=='@') ) {
- strcpy(ptr, ptr+1);
- if (ptr > name) --ptr;
- }
- while ( (*ptr=='@') && (*(ptr+1)!=0) && (isspace(*(ptr+1))) ) {
- strcpy(ptr+1, ptr+2);
- }
- }
-}
-
-
-// values that can be returned by expand_aliases()
-enum {
- EA_ERROR, // Can't send message due to bad address
- EA_MULTIPLE, // Alias expanded into multiple recipients -- run me again!
- EA_LOCAL, // Local message, do no network processing
- EA_INTERNET, // Convert msg and send as Internet mail
- EA_SKIP // This recipient has been invalidated -- skip it!
-};
-
-
-// Process alias and routing info for email addresses
-int expand_aliases(char *name, char *aliases) {
- int a;
- char aaa[SIZ];
- int at = 0;
-
- if (aliases) {
- int num_aliases = num_tokens(aliases, '\n');
- for (a=0; a<num_aliases; ++a) {
- extract_token(aaa, aliases, a, '\n', sizeof aaa);
- char *bar = strchr(aaa, '|');
- if (bar) {
- bar[0] = 0;
- ++bar;
- striplt(aaa);
- striplt(bar);
- if ( (!IsEmptyStr(aaa)) && (!strcasecmp(name, aaa)) ) {
- syslog(LOG_DEBUG, "internet_addressing: global alias <%s> to <%s>", name, bar);
- strcpy(name, bar);
- }
- }
- }
- if (strchr(name, ',')) {
- return(EA_MULTIPLE);
- }
- }
-
- char original_name[256]; // Now go for the regular aliases
- safestrncpy(original_name, name, sizeof original_name);
-
- // should these checks still be here, or maybe move them to split_recps() ?
- striplt(name);
- remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
- stripallbut(name, '<', '>');
-
- // 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: directory alias <%s> 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: host is local, recipient is <%s>", name);
- break;
- }
- }
- }
-
- // Is this a local or remote recipient?
- at = haschar(name, '@');
- if (at == 0) {
- return(EA_LOCAL); // no @'s = local address
- }
- else if (at == 1) {
- return(EA_INTERNET); // one @ = internet address
- }
- else {
- return(EA_ERROR); // more than one @ = badly formed address
- }
-}
-
-
-// Return a supplied list of email addresses as an array, removing superfluous information and syntax.
-// If an existing Array is supplied as "append_to" it will do so; otherwise a new Array is allocated.
-Array *split_recps(char *addresses, Array *append_to) {
-
- if (IsEmptyStr(addresses)) { // nothing supplied, nothing returned
- return(NULL);
- }
-
- // Copy the supplied address list into our own memory space, because we are going to modify it.
- char *a = strdup(addresses);
- if (a == NULL) {
- syslog(LOG_ERR, "internet_addressing: malloc() failed: %m");
- return(NULL);
- }
-
- // Strip out anything in double quotes
- char *l = NULL;
- char *r = NULL;
- do {
- l = strchr(a, '\"');
- r = strrchr(a, '\"');
- if (r > l) {
- strcpy(l, r+1);
- }
- } while (r > l);
-
- // Transform all qualifying delimiters to commas
- char *t;
- for (t=a; t[0]; ++t) {
- if ((t[0]==';') || (t[0]=='|')) {
- t[0]=',';
- }
- }
-
- // Tokenize the recipients into an array. No single recipient should be larger than 256 bytes.
- Array *recipients_array = NULL;
- if (append_to) {
- recipients_array = append_to; // Append to an existing array of recipients
- }
- else {
- recipients_array = array_new(256); // This is a new array of recipients
- }
-
- int num_addresses = num_tokens(a, ',');
- int i;
- for (i=0; i<num_addresses; ++i) {
- char this_address[256];
- extract_token(this_address, a, i, ',', sizeof this_address);
- striplt(this_address); // strip leading and trailing whitespace
- stripout(this_address, '(', ')'); // remove any portion in parentheses
- stripallbut(this_address, '<', '>'); // if angle brackets are present, keep only what is inside them
- if (!IsEmptyStr(this_address)) {
- array_append(recipients_array, this_address);
- }
- }
-
- free(a); // We don't need this buffer anymore.
- return(recipients_array); // Return the completed array to the caller.
-}
-
-
-// Validate recipients, count delivery types and errors, and handle aliasing
-//
-// 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()
-//
-struct recptypes *validate_recipients(char *supplied_recipients, const char *RemoteIdentifier, int Flags) {
- struct recptypes *ret;
- char *recipients = NULL;
- char append[SIZ];
- long len;
- int mailtype;
- int invalid;
- struct ctdluser tempUS;
- struct ctdlroom original_room;
- int err = 0;
- char errmsg[SIZ];
- char *org_recp;
- char this_recp[256];
-
- ret = (struct recptypes *) malloc(sizeof(struct recptypes)); // Initialize
- if (ret == NULL) return(NULL);
- memset(ret, 0, sizeof(struct recptypes)); // set all values to null/zero
-
- if (supplied_recipients == NULL) {
- recipients = strdup("");
- }
- else {
- recipients = strdup(supplied_recipients);
- }
-
- len = strlen(recipients) + 1024; // allocate memory
- ret->errormsg = malloc(len);
- ret->recp_local = malloc(len);
- ret->recp_internet = malloc(len);
- ret->recp_room = malloc(len);
- ret->display_recp = malloc(len);
- ret->recp_orgroom = malloc(len);
-
- ret->errormsg[0] = 0;
- ret->recp_local[0] = 0;
- ret->recp_internet[0] = 0;
- ret->recp_room[0] = 0;
- ret->recp_orgroom[0] = 0;
- ret->display_recp[0] = 0;
- ret->recptypes_magic = RECPTYPES_MAGIC;
-
- Array *recp_array = split_recps(supplied_recipients, NULL);
-
- char *aliases = CtdlGetSysConfig(GLOBAL_ALIASES); // First hit the Global Alias Table
-
- int r;
- for (r=0; (recp_array && r<array_len(recp_array)); ++r) {
- org_recp = (char *)array_get_element_at(recp_array, r);
- strncpy(this_recp, org_recp, sizeof this_recp);
-
- int i;
- for (i=0; i<3; ++i) { // pass three times through the aliaser
- mailtype = expand_aliases(this_recp, aliases);
-
- // If an alias expanded to multiple recipients, strip off those recipients and append them
- // to the end of the array. This loop will hit those again when it gets there.
- if (mailtype == EA_MULTIPLE) {
- recp_array = split_recps(this_recp, recp_array);
- }
- }
-
- // This loop searches for duplicate recipients in the final list and marks them to be skipped.
- int j;
- for (j=0; j<r; ++j) {
- if (!strcasecmp(this_recp, (char *)array_get_element_at(recp_array, j) )) {
- mailtype = EA_SKIP;
- }
- }
-
- syslog(LOG_DEBUG, "Recipient #%d of type %d is <%s>", r, mailtype, this_recp);
- invalid = 0;
- errmsg[0] = 0;
- switch(mailtype) {
- case EA_LOCAL: // There are several types of "local" recipients.
-
- // Old BBS conventions require mail to "sysop" to go somewhere. Send it to the admin room.
- 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);
- }
-
- // This handles rooms which can receive posts via email.
- else if (!strncasecmp(this_recp, "room_", 5)) {
- original_room = CC->room; // Remember where we parked
-
- char mail_to_room[ROOMNAMELEN];
- char *m;
- strncpy(mail_to_room, &this_recp[5], sizeof mail_to_room);
- for (m = mail_to_room; *m; ++m) {
- if (m[0] == '_') m[0]=' ';
- }
- if (!CtdlGetRoom(&CC->room, mail_to_room)) { // Find the room they asked for
-
- err = CtdlDoIHavePermissionToPostInThisRoom( // check for write permissions to room
- errmsg,
- sizeof errmsg,
- RemoteIdentifier,
- Flags,
- 0 // 0 means "this is 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, CC->room.QRname);
-
- if (!IsEmptyStr(ret->recp_orgroom)) {
- strcat(ret->recp_orgroom, "|");
- }
- strcat(ret->recp_orgroom, this_recp);
-
- }
- }
- else { // no such room exists
- ++ret->num_error;
- invalid = 1;
- }
-
- // Restore this session's original room location.
- CC->room = original_room;
-
- }
-
- // This handles the most common case, which is mail to a user's inbox.
- 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);
- }
-
- // No match for this recipient
- else {
- ++ret->num_error;
- invalid = 1;
- }
- break;
- case EA_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 EA_MULTIPLE:
- case EA_SKIP:
- // no action required, anything in this slot has already been processed elsewhere
- break;
- case EA_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);
- }
- }
- }
-
- if (aliases != NULL) { // ok, we're done with the global alias list now
- free(aliases);
- }
-
- if ( (ret->num_local + ret->num_internet + 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 error",
- ret->num_local, ret->num_room, ret->num_internet, ret->num_error
- );
-
- free(recipients);
- if (recp_array) {
- array_free(recp_array);
- }
-
- return(ret);
-}
-
-
-// Destructor for recptypes
-void free_recipients(struct 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_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' )) && (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
-//
-// Note: This still handles obsolete address syntaxes such as user%node@node and ...node!user
-// We should probably remove that.
-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, -1);
- }
- if (CM_IsEmpty(msg, erFc822Addr) && !IsEmptyStr(addr)) {
- CM_SetField(msg, erFc822Addr, addr, -1);
- }
- 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 */
- if (target != NULL) {
- 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) {
- if (target != 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()
- */
-void CtdlRebuildDirectoryIndex_backend(char *username, void *data) {
-
- int j = 0;
- struct ctdluser usbuf;
-
- if (CtdlGetUser(&usbuf, username) != 0) {
- return;
- }
-
- if ( (!IsEmptyStr(usbuf.fullname)) && (!IsEmptyStr(usbuf.emailaddrs)) ) {
- for (j=0; j<num_tokens(usbuf.emailaddrs, '|'); ++j) {
- char one_email[512];
- extract_token(one_email, usbuf.emailaddrs, j, '|', sizeof one_email);
- CtdlDirectoryAddUser(one_email, usbuf.fullname);
- }
- }
-}
-
-
-/*
- * 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);
-}
-
-
-// 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 can lock because the DirectoryIndex functions don't lock.
- return; // Silently fail here if the specified user does not exist.
- }
-
- 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);
-}
-
-
-/*
- * Auto-generate an Internet email address for a user account
- */
-void AutoGenerateEmailAddressForUser(struct ctdluser *user) {
- char synthetic_email_addr[1024];
- int i, j;
- int u = 0;
-
- for (i=0; u==0; ++i) {
- if (i == 0) {
- // first try just converting the user name to lowercase and replacing spaces with underscores
- snprintf(synthetic_email_addr, sizeof synthetic_email_addr, "%s@%s", user->fullname, CtdlGetConfigStr("c_fqdn"));
- for (j=0; ((synthetic_email_addr[j] != '\0')&&(synthetic_email_addr[j] != '@')); j++) {
- synthetic_email_addr[j] = tolower(synthetic_email_addr[j]);
- if (!isalnum(synthetic_email_addr[j])) {
- synthetic_email_addr[j] = '_';
- }
- }
- }
- else if (i == 1) {
- // then try 'ctdl' followed by the user number
- snprintf(synthetic_email_addr, sizeof synthetic_email_addr, "ctdl%08lx@%s", user->usernum, CtdlGetConfigStr("c_fqdn"));
- }
- else if (i > 1) {
- // oof. just keep trying other numbers until we find one
- snprintf(synthetic_email_addr, sizeof synthetic_email_addr, "ctdl%08x@%s", i, CtdlGetConfigStr("c_fqdn"));
- }
- u = CtdlDirectoryLookup(NULL, synthetic_email_addr, 0);
- syslog(LOG_DEBUG, "user_ops: address <%s> lookup returned <%d>", synthetic_email_addr, u);
- }
-
- CtdlSetEmailAddressesForUser(user->fullname, synthetic_email_addr);
- strncpy(CC->user.emailaddrs, synthetic_email_addr, sizeof(user->emailaddrs));
- syslog(LOG_DEBUG, "user_ops: auto-generated email address <%s> for <%s>", synthetic_email_addr, user->fullname);
-}
-
-
-// Determine whether the supplied email address is subscribed to the supplied room's mailing list service.
-int is_email_subscribed_to_list(char *email, char *room_name) {
- struct ctdlroom room;
- long roomnum;
- char *roomnetconfig;
- int found_it = 0;
-
- if (CtdlGetRoom(&room, room_name)) {
- return(0); // room not found, so definitely not subscribed
- }
-
- // If this room has the QR2_SMTP_PUBLIC flag set, anyone may email a post to this room, even non-subscribers.
- if (room.QRflags2 & QR2_SMTP_PUBLIC) {
- return(1);
- }
-
- roomnum = room.QRnumber;
- roomnetconfig = LoadRoomNetConfigFile(roomnum);
- if (roomnetconfig == NULL) {
- return(0);
- }
-
- // We're going to do a very sloppy match here and simply search for the specified email address
- // anywhere in the room's netconfig. If you don't like this, fix it yourself.
- if (bmstrcasestr(roomnetconfig, email)) {
- found_it = 1;
- }
- else {
- found_it = 0;
- }
-
- free(roomnetconfig);
- return(found_it);
-}
projects / citadel.git / blobdiff