+++ /dev/null
-/*
- * This file contains functions which handle the mapping of Internet addresses
- * to users on the Citadel system.
- */
-
-#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>
-
-#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 <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "sysdep_decls.h"
-#include "citserver.h"
-#include "support.h"
-#include "config.h"
-#include "msgbase.h"
-#include "internet_addressing.h"
-#include "user_ops.h"
-#include "room_ops.h"
-#include "parsedate.h"
-#include "database.h"
-#include "ctdl_module.h"
-#ifdef HAVE_ICONV
-#include <iconv.h>
-
-#if 0
-/* This is the non-define version in case of s.b. needing to debug */
-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;
- long pos;
-
- len = strlen(istr);
- pos = 0;
- while (pos < len)
- {
- if (istr[pos] == '_') istr[pos] = ' ';
- pos++;
- }
-
- ibuflen = CtdlDecodeQuotedPrintable(ibuf, istr, len);
- }
- else {
- strcpy(ibuf, istr); /**< unknown encoding */
- ibuflen = strlen(istr);
- }
-
- ctdl_iconv_open("UTF-8", charset, &ic);
- if (ic != (iconv_t)(-1) ) {
- obuflen = 1024;
- obuf = (char *) malloc(obuflen);
- osav = obuf;
- iconv(ic, &ibuf, &ibuflen, &obuf, &obuflen);
- osav[1024-obuflen] = 0;
-
- end = start;
- end++;
- strcpy(start, "");
- remove_token(end, 0, '?');
- remove_token(end, 0, '?');
- remove_token(end, 0, '?');
- remove_token(end, 0, '?');
- strcpy(end, &end[1]);
-
- snprintf(newbuf, sizeof newbuf, "%s%s%s", buf, osav, end);
- strcpy(buf, newbuf);
- free(osav);
- iconv_close(ic);
- }
- else {
- end = start;
- end++;
- strcpy(start, "");
- remove_token(end, 0, '?');
- remove_token(end, 0, '?');
- remove_token(end, 0, '?');
- remove_token(end, 0, '?');
- strcpy(end, &end[1]);
-
- snprintf(newbuf, sizeof newbuf, "%s(unreadable)%s", buf, end);
- strcpy(buf, newbuf);
- }
-
- free(isav);
-
- /*
- * Since spammers will go to all sorts of absurd lengths to get their
- * messages through, there are LOTS of corrupt headers out there.
- * So, prevent a really badly formed RFC2047 header from throwing
- * this function into an infinite loop.
- */
- ++passes;
- if (passes > 20) return;
-
- start = strstr(buf, "=?");
- FindNextEnd((start != NULL)? start : buf, end);
- }
-
-}
-#else
-inline void utf8ify_rfc822_string(char *a){};
-
-#endif
-
-
-
-struct trynamebuf {
- char buffer1[SIZ];
- char buffer2[SIZ];
-};
-
-char *inetcfg = NULL;
-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];
- 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, 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);
-
- found = 0;
-
- /* Process these in a specific order, in case there are multiple matches.
- * We want directory 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;
- }
- if ( (!strcasecmp(type, "directory")) && (!strcasecmp(fqdn, host))) {
- found = hostalias_directory;
- }
-
- if (found) return(found);
- }
-
- return(hostalias_nomatch);
-}
-
-
-
-
-
-
-
-/*
- * Return 0 if a given string fuzzy-matches a Citadel user account
- *
- * FIXME ... this needs to be updated to handle aliases.
- */
-int fuzzy_match(struct ctdluser *us, char *matchstring) {
- int a;
- long len;
-
- if ( (!strncasecmp(matchstring, "cit", 3))
- && (atol(&matchstring[3]) == us->usernum)) {
- return 0;
- }
-
- len = strlen(matchstring);
- for (a=0; !IsEmptyStr(&us->fullname[a]); ++a) {
- if (!strncasecmp(&us->fullname[a],
- matchstring, len)) {
- return 0;
- }
- }
- return -1;
-}
-
-
-/*
- * 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')) {
- sField++;
- if (*sField == '\n')
- sField++;
- *pField = *sField;
- }
- else {
- if (*sField=='\"') quote = 1 - quote;
- if (!quote) {
- if (isspace(*sField))
- {
- *pField = ' ';
- pField++;
- sField++;
-
- while ((sField < pFieldEnd) &&
- isspace(*sField))
- sField++;
- *pField = *sField;
- }
- else *pField = *sField;
- }
- else *pField = *sField;
- }
- }
- *pField = '\0';
- *FieldEnd = pField - 1;
-}
-
-
-
-/*
- * Split an RFC822-style address into userid, host, and full name
- *
- */
-void process_rfc822_addr(const char *rfc822, char *user, char *node, char *name)
-{
- int a;
-
- strcpy(user, "");
- strcpy(node, config.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; a < strlen(name); ++a) {
- if (name[a] == '@')
- name[a] = 0;
- if (name[a] == '%')
- name[a] = 0;
- }
-
- /* 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; a < strlen(name); ++a)
- if (name[a] == 34)
- name[a] = 0;
- }
- /* 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; a < strlen(user); ++a) {
- if (user[a] == '@')
- user[a] = 0;
- if (user[a] == '%')
- user[a] = 0;
- }
-
-
- /* 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, config.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; 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);
- }
-}
-
-
-
-/*
- * 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 buf[SIZ];
- 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);
- snprintf(buf, sizeof buf, "%ld", (long)parsed_date );
- if (msg->cm_fields['T'] == NULL)
- msg->cm_fields['T'] = strdup(buf);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "From")) {
- process_rfc822_addr(value, user, node, name);
- syslog(LOG_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);
- if (msg->cm_fields['F'] == NULL)
- msg->cm_fields['F'] = strdup(addr);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "Subject")) {
- if (msg->cm_fields['U'] == NULL)
- msg->cm_fields['U'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "List-ID")) {
- if (msg->cm_fields['L'] == NULL)
- msg->cm_fields['L'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "To")) {
- if (msg->cm_fields['R'] == NULL)
- msg->cm_fields['R'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "CC")) {
- if (msg->cm_fields['Y'] == NULL)
- msg->cm_fields['Y'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "Message-ID")) {
- if (msg->cm_fields['I'] != NULL) {
- syslog(LOG_WARNING, "duplicate message id\n");
- }
-
- if (msg->cm_fields['I'] == NULL) {
- msg->cm_fields['I'] = strndup(value, valuelen);
-
- /* 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'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "Envelope-To")) {
- if (msg->cm_fields['V'] == NULL)
- msg->cm_fields['V'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "References")) {
- if (msg->cm_fields['W'] != NULL) {
- free(msg->cm_fields['W']);
- }
- msg->cm_fields['W'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "Reply-To")) {
- if (msg->cm_fields['K'] != NULL) {
- free(msg->cm_fields['K']);
- }
- msg->cm_fields['K'] = strndup(value, valuelen);
- processed = 1;
- }
-
- else if (!strcasecmp(key, "In-reply-to")) {
- if (msg->cm_fields['W'] == NULL) { /* References: supersedes In-reply-to: */
- msg->cm_fields['W'] = strndup(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 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) {
- 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;
- char buf[SIZ];
- 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);
- msg->cm_fields['M'] = SmashStrBuf(&OtherHeaders);
-
- /* Follow-up sanity checks... */
-
- /* If there's no timestamp on this message, set it to now. */
- if (msg->cm_fields['T'] == NULL) {
- snprintf(buf, sizeof buf, "%ld", (long)time(NULL));
- msg->cm_fields['T'] = strdup(buf);
- }
-
- /* If a W (references, or rather, Wefewences) field is present, we
- * have to convert it from RFC822 format to Citadel format.
- */
- if (msg->cm_fields['W'] != NULL) {
- convert_references_to_wefewences(msg->cm_fields['W']);
- }
-
- 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, "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
- */
-int CtdlDirectoryAddUser(char *internet_addr, char *citadel_addr) {
- char key[SIZ];
-
- if (IsDirectory(internet_addr, 0) == 0)
- return 0;
- syslog(LOG_DEBUG, "Create directory entry: %s --> %s\n", 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, "Delete directory entry: %s --> %s\n", internet_addr, citadel_addr);
- directory_key(key, internet_addr);
- return cdb_delete(CDB_DIRECTORY, key, strlen(key) ) == 0;
-}
-
-
-/*
- * Look up an Internet e-mail address in the directory.
- * On success: returns 0, and Citadel address stored in 'target'
- * On failure: returns nonzero
- */
-int CtdlDirectoryLookup(char *target, char *internet_addr, size_t targbuflen) {
- struct cdbdata *cdbrec;
- char key[SIZ];
-
- /* Dump it in there unchanged, just for kicks */
- safestrncpy(target, internet_addr, targbuflen);
-
- /* Only do lookups for addresses with hostnames in them */
- if (num_tokens(internet_addr, '@') != 2) return(-1);
-
- /* Only do lookups for domains in the directory */
- if (IsDirectory(internet_addr, 0) == 0) return(-1);
-
- directory_key(key, internet_addr);
- cdbrec = cdb_fetch(CDB_DIRECTORY, key, strlen(key) );
- if (cdbrec != NULL) {
- safestrncpy(target, cdbrec->ptr, targbuflen);
- cdb_free(cdbrec);
- return(0);
- }
-
- return(-1);
-}
-
-
-/*
- * Harvest any email addresses that someone might want to have in their
- * "collected addresses" book.
- */
-char *harvest_collected_addresses(struct CtdlMessage *msg) {
- char *coll = NULL;
- char addr[256];
- char user[256], node[256], name[256];
- int is_harvestable;
- int i, j, h;
- 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);
- if (strstr(addr, "=?") != NULL)
- utf8ify_rfc822_string(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