#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 <sys/time.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
+#endif
+
#include <sys/wait.h>
#include <string.h>
#include <limits.h>
#include "citadel.h"
#include "server.h"
-#include <time.h>
#include "sysdep_decls.h"
#include "citserver.h"
#include "support.h"
#include "config.h"
#include "tools.h"
+#include "msgbase.h"
#include "internet_addressing.h"
#include "user_ops.h"
+#include "room_ops.h"
+#include "parsedate.h"
+#include "database.h"
+
+
+#ifndef HAVE_SNPRINTF
+#include "snprintf.h"
+#endif
+
+
+struct trynamebuf {
+ char buffer1[SIZ];
+ char buffer2[SIZ];
+};
+
+char *inetcfg = NULL;
+struct spamstrings_t *spamstrings = 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];
+
+ if (fqdn == NULL) return(hostalias_nomatch);
+ if (IsEmptyStr(fqdn)) return(hostalias_nomatch);
+ if (!strcasecmp(fqdn, "localhost")) return(hostalias_localhost);
+ if (!strcasecmp(fqdn, config.c_fqdn)) return(hostalias_localhost);
+ if (!strcasecmp(fqdn, config.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);
+
+ if ( (!strcasecmp(type, "localhost"))
+ && (!strcasecmp(fqdn, host)))
+ return(hostalias_localhost);
+
+ if ( (!strcasecmp(type, "gatewaydomain"))
+ && (!strcasecmp(&fqdn[strlen(fqdn)-strlen(host)], host)))
+ return(hostalias_gatewaydomain);
+
+ if ( (!strcasecmp(type, "directory"))
+ && (!strcasecmp(&fqdn[strlen(fqdn)-strlen(host)], host)))
+ return(hostalias_directory);
+
+ if ( (!strcasecmp(type, "masqdomain"))
+ && (!strcasecmp(&fqdn[strlen(fqdn)-strlen(host)], host)))
+ return(hostalias_masq);
+
+ }
+
+ return(hostalias_nomatch);
+}
+
+
+
+
+
/*
* Return 0 if a given string fuzzy-matches a Citadel user account
*
- * FIX ... this needs to be updated to match any and all address syntaxes.
+ * FIXME ... this needs to be updated to handle aliases.
*/
-int fuzzy_match(struct usersupp *us, char *matchstring) {
+int fuzzy_match(struct ctdluser *us, char *matchstring) {
int a;
+ if ( (!strncasecmp(matchstring, "cit", 3))
+ && (atol(&matchstring[3]) == us->usernum)) {
+ return 0;
+ }
+
+
for (a=0; a<strlen(us->fullname); ++a) {
if (!strncasecmp(&us->fullname[a],
matchstring, strlen(matchstring))) {
}
+/*
+ * Unfold a multi-line field into a single line, removing multi-whitespaces
+ */
+void unfold_rfc822_field(char *field) {
+ int i;
+ int quote = 0;
+
+ striplt(field); /* remove leading/trailing whitespace */
+
+ /* convert non-space whitespace to spaces, and remove double blanks */
+ for (i=0; i<strlen(field); ++i) {
+ if (field[i]=='\"') quote = 1 - quote;
+ if (!quote) {
+ if (isspace(field[i])) field[i] = ' ';
+ while (isspace(field[i]) && isspace(field[i+1])) {
+ strcpy(&field[i+1], &field[i+2]);
+ }
+ }
+ }
+}
+
/*
* Split an RFC822-style address into userid, host, and full name
- * (Originally from citmail.c, and unchanged so far)
*
*/
-void process_rfc822_addr(char *rfc822, char *user, char *node, char *name)
+void process_rfc822_addr(const char *rfc822, char *user, char *node, char *name)
{
int a;
strcpy(node, config.c_fqdn);
strcpy(name, "");
+ if (rfc822 == NULL) return;
+
/* extract full name - first, it's From minus <userid> */
strcpy(name, rfc822);
- for (a = 0; a < strlen(name); ++a) {
- if (name[a] == '<') {
- do {
- strcpy(&name[a], &name[a + 1]);
- } while ((strlen(name) > 0) && (name[a] != '>'));
- strcpy(&name[a], &name[a + 1]);
- }
- }
+ stripout(name, '<', '>');
+
/* strip anything to the left of a bang */
- while ((strlen(name) > 0) && (haschar(name, '!') > 0))
+ while ((!IsEmptyStr(name)) && (haschar(name, '!') > 0))
strcpy(name, &name[1]);
/* and anything to the right of a @ or % */
/* but if there are parentheses, that changes the rules... */
if ((haschar(rfc822, '(') == 1) && (haschar(rfc822, ')') == 1)) {
strcpy(name, rfc822);
- while ((strlen(name) > 0) && (name[0] != '(')) {
- strcpy(&name[0], &name[1]);
- }
- strcpy(&name[0], &name[1]);
- for (a = 0; a < strlen(name); ++a) {
- if (name[a] == ')') {
- name[a] = 0;
- }
- }
+ stripallbut(name, '(', ')');
}
+
/* but if there are a set of quotes, that supersedes everything */
if (haschar(rfc822, 34) == 2) {
strcpy(name, rfc822);
- while ((strlen(name) > 0) && (name[0] != 34)) {
+ while ((!IsEmptyStr(name)) && (name[0] != 34)) {
strcpy(&name[0], &name[1]);
}
strcpy(&name[0], &name[1]);
strcpy(user, rfc822);
/* first get rid of anything in parens */
- for (a = 0; a < strlen(user); ++a)
- if (user[a] == '(') {
- do {
- strcpy(&user[a], &user[a + 1]);
- } while ((strlen(user) > 0) && (user[a] != ')'));
- strcpy(&user[a], &user[a + 1]);
- }
+ stripout(user, '(', ')');
+
/* if there's a set of angle brackets, strip it down to that */
if ((haschar(user, '<') == 1) && (haschar(user, '>') == 1)) {
- while ((strlen(user) > 0) && (user[0] != '<')) {
- strcpy(&user[0], &user[1]);
- }
- strcpy(&user[0], &user[1]);
- for (a = 0; a < strlen(user); ++a)
- if (user[a] == '>')
- user[a] = 0;
+ stripallbut(user, '<', '>');
}
+
/* strip anything to the left of a bang */
- while ((strlen(user) > 0) && (haschar(user, '!') > 0))
+ while ((!IsEmptyStr(user)) && (haschar(user, '!') > 0))
strcpy(user, &user[1]);
/* and anything to the right of a @ or % */
strcpy(node, rfc822);
/* first get rid of anything in parens */
- for (a = 0; a < strlen(node); ++a)
- if (node[a] == '(') {
- do {
- strcpy(&node[a], &node[a + 1]);
- } while ((strlen(node) > 0) && (node[a] != ')'));
- strcpy(&node[a], &node[a + 1]);
- }
+ stripout(node, '(', ')');
+
/* if there's a set of angle brackets, strip it down to that */
if ((haschar(node, '<') == 1) && (haschar(node, '>') == 1)) {
- while ((strlen(node) > 0) && (node[0] != '<')) {
- strcpy(&node[0], &node[1]);
- }
- strcpy(&node[0], &node[1]);
- for (a = 0; a < strlen(node); ++a)
- if (node[a] == '>')
- node[a] = 0;
+ stripallbut(node, '<', '>');
}
- /* strip anything to the left of a @ */
- while ((strlen(node) > 0) && (haschar(node, '@') > 0))
- strcpy(node, &node[1]);
- /* strip anything to the left of a % */
- while ((strlen(node) > 0) && (haschar(node, '%') > 0))
- strcpy(node, &node[1]);
+ /* If no node specified, tack ours on instead */
+ if (
+ (haschar(node, '@')==0)
+ && (haschar(node, '%')==0)
+ && (haschar(node, '!')==0)
+ ) {
+ strcpy(node, config.c_nodename);
+ }
- /* reduce multiple system bang paths to node!user */
- while ((strlen(node) > 0) && (haschar(node, '!') > 1))
- strcpy(node, &node[1]);
+ else {
- /* now get rid of the user portion of a node!user string */
- for (a = 0; a < strlen(node); ++a)
- if (node[a] == '!')
- node[a] = 0;
+ /* 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; a < strlen(node); ++a)
+ if (node[a] == '!')
+ node[a] = 0;
+ }
/* 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);
+ }
}
/*
- * Back end for convert_internet_address()
- * (Compares an internet name [buffer1] and stores in [buffer2] if found)
+ * 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.
*/
-void try_name(struct usersupp *us) {
-
- if (!strncasecmp(CC->buffer1, "cit", 3))
- if (atol(&CC->buffer1[3]) == us->usernum)
- strcpy(CC->buffer2, us->fullname);
+int convert_field(struct CtdlMessage *msg, int beg, int end) {
+ char *rfc822;
+ char *key, *value;
+ int i;
+ int colonpos = (-1);
+ int processed = 0;
+ char buf[SIZ];
+ char user[1024];
+ char node[1024];
+ char name[1024];
+ char addr[1024];
+ time_t parsed_date;
+
+ rfc822 = msg->cm_fields['M']; /* M field contains rfc822 text */
+ for (i = end; i >= beg; --i) {
+ if (rfc822[i] == ':') colonpos = i;
+ }
- if (!collapsed_strcmp(CC->buffer1, us->fullname))
- strcpy(CC->buffer2, us->fullname);
+ if (colonpos < 0) return(0); /* no colon? not a valid header line */
- if (us->uid != BBSUID)
- if (!strcasecmp(CC->buffer1, getpwuid(us->uid)->pw_name))
- strcpy(CC->buffer2, us->fullname);
-}
+ key = malloc((end - beg) + 2);
+ safestrncpy(key, &rfc822[beg], (end-beg)+1);
+ key[colonpos - beg] = 0;
+ value = &key[(colonpos - beg) + 1];
+ unfold_rfc822_field(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);
+ snprintf(buf, sizeof buf, "%ld", (long)parsed_date );
+ if (msg->cm_fields['T'] == NULL)
+ msg->cm_fields['T'] = strdup(buf);
+ processed = 1;
+ }
-/*
- * Convert an Internet email address to a Citadel user/host combination
- */
-int convert_internet_address(char *destuser, char *desthost, char *source)
-{
- char user[256];
- char node[256];
- char name[256];
+ else if (!strcasecmp(key, "From")) {
+ process_rfc822_addr(value, user, node, name);
+ lprintf(CTDL_DEBUG, "Converted to <%s@%s> (%s)\n", user, node, name);
+ snprintf(addr, sizeof addr, "%s@%s", user, node);
+ if (msg->cm_fields['A'] == NULL)
+ msg->cm_fields['A'] = strdup(name);
+ processed = 1;
+ if (msg->cm_fields['F'] == NULL)
+ msg->cm_fields['F'] = strdup(addr);
+ processed = 1;
+ }
- /* Split it up */
- process_rfc822_addr(source, user, node, name);
+ else if (!strcasecmp(key, "Subject")) {
+ if (msg->cm_fields['U'] == NULL)
+ msg->cm_fields['U'] = strdup(value);
+ processed = 1;
+ }
- /* Map the FQDN to a Citadel node name
- * FIX ... we have to check for all known aliases for the local
- * system, and also handle gateway domains, etc. etc.
- */
- if (!strcasecmp(node, config.c_fqdn)) {
- strcpy(node, config.c_nodename);
+ else if (!strcasecmp(key, "To")) {
+ if (msg->cm_fields['R'] == NULL)
+ msg->cm_fields['R'] = strdup(value);
+ processed = 1;
}
- /* Return an error condition if the node is not known.
- * FIX ... make this work for non-local systems
- */
- if (strcasecmp(node, config.c_nodename)) {
- return(rfc822_address_invalid);
+ else if (!strcasecmp(key, "CC")) {
+ if (msg->cm_fields['Y'] == NULL)
+ msg->cm_fields['Y'] = strdup(value);
+ processed = 1;
}
-
- /* Now try to resolve the name
- * FIX ... do the multiple-addresses thing
- */
- if (!strcasecmp(node, config.c_nodename)) {
- strcpy(destuser, user);
- strcpy(desthost, config.c_nodename);
- strcpy(CC->buffer1, user);
- strcpy(CC->buffer2, "");
- ForEachUser(try_name);
- if (strlen(CC->buffer2) == 0) return(rfc822_no_such_user);
- strcpy(destuser, CC->buffer2);
- return(rfc822_address_locally_validated);
- }
-
- return(rfc822_address_invalid); /* unknown error */
-}
+ else if (!strcasecmp(key, "Message-ID")) {
+ if (msg->cm_fields['I'] != NULL) {
+ lprintf(CTDL_WARNING, "duplicate message id\n");
+ }
+ if (msg->cm_fields['I'] == NULL) {
+ msg->cm_fields['I'] = strdup(value);
+ /* Strip angle brackets */
+ while (haschar(msg->cm_fields['I'], '<') > 0) {
+ strcpy(&msg->cm_fields['I'][0],
+ &msg->cm_fields['I'][1]);
+ }
+ for (i = 0; i<strlen(msg->cm_fields['I']); ++i)
+ if (msg->cm_fields['I'][i] == '>')
+ msg->cm_fields['I'][i] = 0;
+ }
+
+ processed = 1;
+ }
+
+ else if (!strcasecmp(key, "Return-Path")) {
+ if (msg->cm_fields['P'] == NULL)
+ msg->cm_fields['P'] = strdup(value);
+ processed = 1;
+ }
+
+ else if (!strcasecmp(key, "Envelope-To")) {
+ if (msg->cm_fields['V'] == NULL)
+ msg->cm_fields['V'] = strdup(value);
+ processed = 1;
+ }
+
+ /* Clean up and move on. */
+ free(key); /* Don't free 'value', it's actually the same buffer */
+ return(processed);
+}
/*
* 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 CtdlFreeMessage() is called. Therefore, the
+ * supplied buffer should be DEREFERENCED. It should not be freed or used
+ * again.
*/
struct CtdlMessage *convert_internet_message(char *rfc822) {
struct CtdlMessage *msg;
- char *buf;
+ int pos, beg, end, msglen;
+ int done;
+ char buf[SIZ];
+ int converted;
- msg = mallok(sizeof(struct CtdlMessage));
+ 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 = 4; /* always MIME */
+ msg->cm_format_type = FMT_RFC822; /* internet message */
msg->cm_fields['M'] = rfc822;
- /* FIX there's plenty to do here. */
+ pos = 0;
+ done = 0;
+
+ while (!done) {
+ /* Locate beginning and end of field, keeping in mind that
+ * some fields might be multiline
+ */
+ beg = pos;
+ end = (-1);
- /* Follow-up sanity check. */
+ msglen = strlen(rfc822);
+ while ( (end < 0) && (done == 0) ) {
+
+ if ((rfc822[pos]=='\n')
+ && (!isspace(rfc822[pos+1]))) {
+ end = pos;
+ }
+
+ /* done with headers? */
+ if ( (rfc822[pos]=='\n')
+ && ( (rfc822[pos+1]=='\n')
+ ||(rfc822[pos+1]=='\r')) ) {
+ end = pos;
+ done = 1;
+ }
+
+ if (pos >= (msglen-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) {
+ strcpy(&rfc822[beg], &rfc822[pos]);
+ pos = beg;
+ }
+
+ /* If we've hit the end of the message, bail out */
+ if (pos > strlen(rfc822)) done = 1;
+ }
+
+ /* Follow-up sanity checks... */
/* If there's no timestamp on this message, set it to now. */
if (msg->cm_fields['T'] == NULL) {
- sprintf(buf, "%ld", time(NULL));
- msg->cm_fields['T'] = strdoop(buf);
+ snprintf(buf, sizeof buf, "%ld", (long)time(NULL));
+ msg->cm_fields['T'] = strdup(buf);
}
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(char *rfc822, char *fieldname) {
+ char *fieldbuf = NULL;
+ char *end_of_headers;
+ char *field_start;
+ 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 = bmstrcasestr(rfc822, "\n\r\n");
+ if (end_of_headers == NULL) {
+ end_of_headers = bmstrcasestr(rfc822, "\n\n");
+ }
+ if (end_of_headers == NULL) return (NULL);
+
+ field_start = bmstrcasestr(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 = memreadline(ptr, fieldbuf, SIZ-strlen(fieldbuf) );
+ while ( (isspace(ptr[0])) && (ptr < end_of_headers) ) {
+ strcat(fieldbuf, " ");
+ cont = &fieldbuf[strlen(fieldbuf)];
+ ptr = memreadline(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; i<strlen(addr); ++i) {
+ if (!isspace(addr[i])) {
+ key[keylen++] = tolower(addr[i]);
+ }
+ }
+ key[keylen++] = 0;
+
+ lprintf(CTDL_DEBUG, "Directory key is <%s>\n", key);
+}
+
+
+
+/* Return nonzero if the supplied address is in a domain we keep in
+ * the directory
+ */
+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) || (h == hostalias_directory) ) {
+ return(1);
+ }
+ else {
+ return(0);
+ }
+}
+
+
+/*
+ * Initialize the directory database (erasing anything already there)
+ */
+void CtdlDirectoryInit(void) {
+ cdb_trunc(CDB_DIRECTORY);
+}
+
+
+/*
+ * Add an Internet e-mail address to the directory for a user
+ */
+void CtdlDirectoryAddUser(char *internet_addr, char *citadel_addr) {
+ char key[SIZ];
+
+ lprintf(CTDL_DEBUG, "Dir: %s --> %s\n",
+ internet_addr, citadel_addr);
+ if (IsDirectory(internet_addr, 0) == 0) return;
+
+ directory_key(key, internet_addr);
+
+ cdb_store(CDB_DIRECTORY, key, strlen(key),
+ citadel_addr, strlen(citadel_addr)+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.)
+ */
+void CtdlDirectoryDelUser(char *internet_addr, char *citadel_addr) {
+ char key[SIZ];
+
+ directory_key(key, internet_addr);
+ cdb_delete(CDB_DIRECTORY, key, strlen(key) );
+}
+
+
+/*
+ * 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;
+ int field = 0;
+
+ if (msg == NULL) return(NULL);
+
+ is_harvestable = 1;
+ strcpy(addr, "");
+ if (msg->cm_fields['A'] != NULL) {
+ strcat(addr, msg->cm_fields['A']);
+ }
+ if (msg->cm_fields['F'] != NULL) {
+ strcat(addr, " <");
+ strcat(addr, msg->cm_fields['F']);
+ strcat(addr, ">");
+ if (IsDirectory(msg->cm_fields['F'], 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 = 'R' ;
+ if (i == 1) field = 'Y' ;
+
+ if (msg->cm_fields[field] != NULL) {
+ for (j=0; j<num_tokens(msg->cm_fields[field], ','); ++j) {
+ extract_token(addr, msg->cm_fields[field], j, ',', sizeof addr);
+ process_rfc822_addr(addr, user, node, name);
+ h = CtdlHostAlias(node);
+ if ( (h != hostalias_localhost) && (h != hostalias_directory) ) {
+ 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);
+}
projects / citadel.git / blobdiff