#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
+#include <ctype.h>
#include <signal.h>
#include <pwd.h>
#include <errno.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"
+
+
+struct trynamebuf {
+ char buffer1[256];
+ char buffer2[256];
+};
+
+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];
+
+ 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');
+ extract_token(host, buf, 0, '|');
+ extract_token(type, buf, 1, '|');
+
+ if ( (!strcasecmp(type, "localhost"))
+ && (!strcasecmp(fqdn, host)))
+ return(hostalias_localhost);
+
+ if ( (!strcasecmp(type, "gatewaydomain"))
+ && (!strcasecmp(&fqdn[strlen(fqdn)-strlen(host)], host)))
+ return(hostalias_gatewaydomain);
+
+ }
+
+ 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 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)
{
int a;
+ strcpy(user, "");
+ strcpy(node, config.c_fqdn);
+ strcpy(name, "");
+
/* extract full name - first, it's From minus <userid> */
strcpy(name, rfc822);
for (a = 0; a < strlen(name); ++a) {
if (node[a] == '>')
node[a] = 0;
}
- /* 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 ((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]);
+
+ /* reduce multiple system bang paths to node!user */
+ while ((strlen(node) > 0) && (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);
* Back end for convert_internet_address()
* (Compares an internet name [buffer1] and stores in [buffer2] if found)
*/
-void try_name(struct usersupp *us) {
+void try_name(struct usersupp *us, void *data) {
+ struct trynamebuf *tnb;
+ tnb = (struct trynamebuf *)data;
- if (!strncasecmp(CC->buffer1, "cit", 3))
- if (atol(&CC->buffer1[3]) == us->usernum)
- strcpy(CC->buffer2, us->fullname);
+ if (!strncasecmp(tnb->buffer1, "cit", 3))
+ if (atol(&tnb->buffer1[3]) == us->usernum)
+ strcpy(tnb->buffer2, us->fullname);
- if (!collapsed_strcmp(CC->buffer1, us->fullname))
- strcpy(CC->buffer2, us->fullname);
+ if (!collapsed_strcmp(tnb->buffer1, us->fullname))
+ strcpy(tnb->buffer2, us->fullname);
if (us->uid != BBSUID)
- if (!strcasecmp(CC->buffer1, getpwuid(us->uid)->pw_name))
- strcpy(CC->buffer2, us->fullname);
+ if (!strcasecmp(tnb->buffer1, getpwuid(us->uid)->pw_name))
+ strcpy(tnb->buffer2, us->fullname);
}
char user[256];
char node[256];
char name[256];
+ struct quickroom qrbuf;
+ int i;
+ int hostalias;
+ struct trynamebuf tnb;
+ char buf[256];
+ int passes = 0;
+ char sourcealias[1024];
+
+ safestrncpy(sourcealias, source, sizeof(sourcealias) );
+ alias(sourcealias);
+REALIAS:
/* Split it up */
- process_rfc822_addr(source, user, node, name);
+ process_rfc822_addr(sourcealias, user, node, name);
+ lprintf(9, "process_rfc822_addr() converted to <%s@%s> (%s)\n",
+ user, node, name);
/* 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);
- }
+ hostalias = CtdlHostAlias(node);
+ switch(hostalias) {
+ case hostalias_localhost:
+ strcpy(node, config.c_nodename);
+ break;
- /* 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(1);
+ case hostalias_gatewaydomain:
+ extract_token(buf, node, 0, '.');
+ safestrncpy(node, buf, sizeof buf);
}
-
+
/* Now try to resolve the name
- * FIX ... do the multiple-addresses thing
+ * FIXME ... do the multiple-addresses thing
*/
if (!strcasecmp(node, config.c_nodename)) {
+
+
+ /* First, see if we hit an alias. Don't do this more than
+ * a few times, in case we accidentally hit an alias loop
+ */
+ strcpy(sourcealias, user);
+ alias(user);
+ if ( (strcasecmp(user, sourcealias)) && (++passes < 3) )
+ goto REALIAS;
+
+ /* Try all local rooms */
+ if (!strncasecmp(user, "room_", 5)) {
+ strcpy(name, &user[5]);
+ for (i=0; i<strlen(name); ++i)
+ if (name[i]=='_') name[i]=' ';
+ if (getroom(&qrbuf, name) == 0) {
+ strcpy(destuser, qrbuf.QRname);
+ strcpy(desthost, config.c_nodename);
+ return rfc822_room_delivery;
+ }
+ }
+
+ /* Try all local users */
strcpy(destuser, user);
strcpy(desthost, config.c_nodename);
- strcpy(CC->buffer1, user);
- strcpy(CC->buffer2, "");
- ForEachUser(try_name);
- if (strlen(CC->buffer2) == 0) return(2);
- strcpy(destuser, CC->buffer2);
- return(0);
+ strcpy(tnb.buffer1, user);
+ strcpy(tnb.buffer2, "");
+ ForEachUser(try_name, &tnb);
+ if (strlen(tnb.buffer2) == 0) return(rfc822_no_such_user);
+ strcpy(destuser, tnb.buffer2);
+ return(rfc822_address_locally_validated);
+ }
+
+ strcpy(destuser, user);
+ strcpy(desthost, node);
+ if (hostalias == hostalias_gatewaydomain)
+ return(rfc822_address_on_citadel_network);
+ return(rfc822_address_nonlocal);
+}
+
+
+
+
+/*
+ * 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, int beg, int end) {
+ char *rfc822;
+ char *key, *value;
+ int i;
+ int colonpos = (-1);
+ int processed = 0;
+ char buf[256];
+ 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 (colonpos < 0) return(0); /* no colon? not a valid header line */
+
+ key = mallok((end - beg) + 2);
+ safestrncpy(key, &rfc822[beg], (end-beg)+1);
+ key[colonpos - beg] = 0;
+ value = &key[(colonpos - beg) + 1];
+ unfold_rfc822_field(value);
+
+ lprintf(9, "Key=<%s> Value=<%s>\n", key, 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);
+ lprintf(9, "Parsed date is %s",
+ asctime(localtime(&parsed_date)));
+ snprintf(buf, sizeof buf, "%ld", parsed_date );
+ if (msg->cm_fields['T'] == NULL)
+ msg->cm_fields['T'] = strdoop(buf);
+ processed = 1;
+ }
+
+ else if (!strcasecmp(key, "From")) {
+ process_rfc822_addr(value, user, node, name);
+ lprintf(9, "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'] = strdoop(name);
+ processed = 1;
+ if (msg->cm_fields['F'] == NULL)
+ msg->cm_fields['F'] = strdoop(addr);
+ processed = 1;
+ }
+
+ else if (!strcasecmp(key, "Subject")) {
+ if (msg->cm_fields['U'] == NULL)
+ msg->cm_fields['U'] = strdoop(value);
+ processed = 1;
+ }
+
+ else if (!strcasecmp(key, "Message-ID")) {
+ if (msg->cm_fields['I'] != NULL) {
+ lprintf(5, "duplicate message id\n");
+ }
+
+ if (msg->cm_fields['I'] == NULL) {
+ msg->cm_fields['I'] = strdoop(value);
+
+ /* Strip angle brackets */
+ if ((haschar(msg->cm_fields['I'], '<') == 1)
+ && (haschar(msg->cm_fields['I'], '>') == 1)) {
+ while ((strlen(msg->cm_fields['I']) > 0)
+ && (msg->cm_fields['I'][0] != '<')) {
+ strcpy(&msg->cm_fields['I'][0],
+ &msg->cm_fields['I'][1]);
+ }
+ 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;
+ }
+ }
+
+ if (msg->cm_fields['I'] != NULL) {
+ TRACE;
+ lprintf(9, "Converted message id <%s>\n",
+ msg->cm_fields['I'] );
+ }
+ processed = 1;
+ }
+
+ /* Clean up and move on. */
+ phree(key); /* Don't free 'value', it's actually the same buffer */
+ return(processed);
+}
+
+
+/*
+ * Convert an RFC822 message (headers + body) to a CtdlMessage structure.
+ */
+struct CtdlMessage *convert_internet_message(char *rfc822) {
+
+ struct CtdlMessage *msg;
+ int pos, beg, end;
+ int done;
+ char buf[256];
+ int converted;
+
+ msg = mallok(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 */
+ msg->cm_fields['M'] = rfc822;
+
+ lprintf(9, "Unconverted RFC822 message length = %d\n", strlen(rfc822));
+ pos = 0;
+ done = 0;
+
+ while (!done) {
+
+ TRACE; lprintf(9, "I field is %s\n", msg->cm_fields['I']);
+ /* Locate beginning and end of field, keeping in mind that
+ * some fields might be multiline
+ */
+ beg = pos;
+ end = (-1);
+ for (pos=beg; ((pos<=strlen(rfc822))&&(end<0)); ++pos) {
+ if ((rfc822[pos]=='\n')
+ && (!isspace(rfc822[pos+1]))) {
+ end = pos;
+ }
+ if ( (rfc822[pos]=='\n') /* done w. headers? */
+ && ( (rfc822[pos+1]=='\n')
+ ||(rfc822[pos+1]=='\r'))) {
+ end = pos;
+ done = 1;
+ }
+
+ }
+
+ /* 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;
}
- return(3); /* unknown error */
+ /* Follow-up sanity checks... */
+ TRACE; lprintf(9, "I field is %s\n", msg->cm_fields['I']);
+
+ /* If there's no timestamp on this message, set it to now. */
+ if (msg->cm_fields['T'] == NULL) {
+ snprintf(buf, sizeof buf, "%ld", time(NULL));
+ msg->cm_fields['T'] = strdoop(buf);
+ }
+
+ TRACE; lprintf(9, "I field is %s\n", msg->cm_fields['I']);
+ lprintf(9, "RFC822 length remaining after conversion = %d\n",
+ strlen(rfc822));
+ return msg;
}
+
projects / citadel.git / blobdiff