+/*
+ * 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);
+}
+
+
+/*
+ * Citadel protocol command to do the same
+ */
+void cmd_isme(char *argbuf) {
+ char addr[256];
+
+ if (CtdlAccessCheck(ac_logged_in)) return;
+ extract_token(addr, argbuf, 0, '|', sizeof addr);
+
+ if (CtdlIsMe(addr, sizeof addr)) {
+ cprintf("%d %s\n", CIT_OK, addr);
+ }
+ else {
+ cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
+ }
+
+}
+
+
+/* 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)
+{
+ 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.
+ * (Error messages have been commented out, because this is a server.)
+ */
+int alias(char *name)
+{ /* process alias and routing info for mail */
+ struct CitContext *CCC = CC;
+ 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");
+ 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; a < strlen(aaa); ++a) {
+ if (aaa[a] == ',') {
+ strcpy(bbb, &aaa[a + 1]);
+ aaa[a] = 0;
+ }
+ }
+ if (!strcasecmp(name, aaa))
+ strcpy(name, bbb);
+ }
+ fclose(fp);
+
+ /* Hit the Global Address Book */
+ if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
+ strcpy(name, aaa);
+ }
+
+ if (strcasecmp(original_name, name)) {
+ MSG_syslog(LOG_INFO, "%s is being forwarded to %s\n", original_name, name);
+ }
+
+ /* Change "user @ xxx" to "user" if xxx is an alias for this host */
+ for (a=0; a<strlen(name); ++a) {
+ if (name[a] == '@') {
+ if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
+ name[a] = 0;
+ MSG_syslog(LOG_INFO, "Changed to <%s>\n", name);
+ }
+ }
+ }
+
+ /* 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()
+ */
+struct recptypes *validate_recipients(const char *supplied_recipients,
+ const char *RemoteIdentifier,
+ int Flags) {
+ struct CitContext *CCC = CC;
+ struct 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 = (struct recptypes *) malloc(sizeof(struct recptypes));
+ if (ret == NULL) return(NULL);
+
+ /* Set all strings to null and numeric values to zero */
+ memset(ret, 0, sizeof(struct 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;
+ MSG_syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", 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, config.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 or an attached
+ * Citadel directory, 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.");
+ }
+
+ MSGM_syslog(LOG_DEBUG, "validate_recipients()\n");
+ MSG_syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
+ MSG_syslog(LOG_DEBUG, " room: %d <%s>\n", ret->num_room, ret->recp_room);
+ MSG_syslog(LOG_DEBUG, " inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
+ MSG_syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
+ MSG_syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
+
+ free(recipients);
+ return(ret);
+}
+
+
+/*
+ * Destructor for struct recptypes
+ */
+void free_recipients(struct recptypes *valid) {
+
+ if (valid == NULL) {
+ return;
+ }
+
+ if (valid->recptypes_magic != RECPTYPES_MAGIC) {
+ struct CitContext *CCC = CC;
+ MSGM_syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
+ 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)
+{
+ struct CitContext *CCC = CC;
+ 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;
+ if (MessageDebugEnabled != 0) cit_backtrace();
+ MSG_syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", 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;
+}
/*
}
return(coll);
}
+
+
+CTDL_MODULE_INIT(internet_addressing)
+{
+ if (!threading) {
+ CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
+ }
+ return "internet_addressing";
+}
projects / citadel.git / blobdiff