mime_download(): missed CC -> CCC in one place.
[citadel.git] / citadel / msgbase.c
index a1acc98c4221cf7832a5a398bf4e8a6518b7152a..089d50b23edee2a9d5b6e8a603cb26f88a3c65cd 100644 (file)
@@ -38,6 +38,9 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <regex.h>
+
+#include "md5.h"
+
 #include <libcitadel.h>
 #include "citadel.h"
 #include "server.h"
@@ -85,32 +88,43 @@ char *msgkeys[] = {
        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
        NULL, 
-       "from",
-       NULL, NULL, NULL,
-       "exti",
-       "rfca",
-       NULL, 
-       "hnod",
-       "msgn",
-       "jrnl",
-       NULL,
-       "list",
-       "text",
-       "node",
-       "room",
-       "path",
-       NULL,
-       "rcpt",
-       "spec",
-       "time",
-       "subj",
-       NULL,
-       "wefw",
-       NULL,
-       "cccc",
-       NULL
+       "from", /* A */
+       NULL,   /* B */
+       NULL,   /* C */
+       NULL,   /* D */
+       "exti", /* E */
+       "rfca", /* F */
+       NULL,   /* G */
+       "hnod", /* H */
+       "msgn", /* I */
+       "jrnl", /* J */
+       "rep2", /* K */
+       "list", /* L */
+       "text", /* M */
+       "node", /* N */
+       "room", /* O */
+       "path", /* P */
+       NULL,   /* Q */
+       "rcpt", /* R */
+       "spec", /* S */
+       "time", /* T */
+       "subj", /* U */
+       "nvto", /* V */
+       "wefw", /* W */
+       NULL,   /* X */
+       "cccc", /* Y */
+       NULL    /* Z */
 };
 
+void CtdlMsgSetCM_Fields(struct CtdlMessage *Msg, const char which, const char *buf, long length)
+{
+       if (Msg->cm_fields[which] != NULL)
+               free (Msg->cm_fields[which]);
+       Msg->cm_fields[which] = malloc(length + 1);
+       memcpy(Msg->cm_fields[which], buf, length);
+       Msg->cm_fields[which][length] = '\0';
+}
+
 /*
  * This function is self explanatory.
  * (What can I say, I'm in a weird mood today...)
@@ -1133,7 +1147,7 @@ void mime_download(char *name, char *filename, char *partnum, char *disp,
                        return;
                }
        
-               rv = fwrite(content, length, 1, CC->download_fp);
+               rv = fwrite(content, length, 1, CCC->download_fp);
                if (rv <= 0) {
                        MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
                                   strerror(errno));
@@ -1307,6 +1321,49 @@ void CtdlFreeMessage(struct CtdlMessage *msg)
        free(msg);
 }
 
+int DupCMField(int i, struct CtdlMessage *OrgMsg, struct CtdlMessage *NewMsg)
+{
+       long len;
+       len = strlen(OrgMsg->cm_fields[i]);
+       NewMsg->cm_fields[i] = malloc(len + 1);
+       if (NewMsg->cm_fields[i] == NULL)
+               return 0;
+       memcpy(NewMsg->cm_fields[i], OrgMsg->cm_fields[i], len);
+       NewMsg->cm_fields[i][len] = '\0';
+       return 1;
+}
+
+struct CtdlMessage * CtdlDuplicateMessage(struct CtdlMessage *OrgMsg)
+{
+       int i;
+       struct CtdlMessage *NewMsg;
+
+       if (is_valid_message(OrgMsg) == 0) 
+               return NULL;
+       NewMsg = (struct CtdlMessage *)malloc(sizeof(struct CtdlMessage));
+       if (NewMsg == NULL)
+               return NULL;
+
+       memcpy(NewMsg, OrgMsg, sizeof(struct CtdlMessage));
+
+       memset(&NewMsg->cm_fields, 0, sizeof(char*) * 256);
+       
+       for (i = 0; i < 256; ++i)
+       {
+               if (OrgMsg->cm_fields[i] != NULL)
+               {
+                       if (!DupCMField(i, OrgMsg, NewMsg))
+                       {
+                               CtdlFreeMessage(NewMsg);
+                               return NULL;
+                       }
+               }
+       }
+
+       return NewMsg;
+}
+
+
 
 /*
  * Pre callback function for multipart/alternative
@@ -1654,7 +1711,9 @@ int CtdlOutputMsg(long msg_num,           /* message number (local) to fetch */
                  int do_proto,         /* do Citadel protocol responses? */
                  int crlf,             /* Use CRLF newlines instead of LF? */
                  char *section,        /* NULL or a message/rfc822 section */
-                 int flags             /* various flags; see msgbase.h */
+                 int flags,            /* various flags; see msgbase.h */
+                 char **Author,
+                 char **Address
 ) {
        struct CitContext *CCC = CC;
        struct CtdlMessage *TheMessage = NULL;
@@ -1732,6 +1791,17 @@ int CtdlOutputMsg(long msg_num,          /* message number (local) to fetch */
                        *extract_encapsulated_message,
                        NULL, NULL, (void *)&encap, 0
                );
+
+               if ((Author != NULL) && (*Author == NULL))
+               {
+                       *Author = TheMessage->cm_fields['A'];
+                       TheMessage->cm_fields['A'] = NULL;
+               }
+               if ((Address != NULL) && (*Address == NULL))
+               {       
+                       *Address = TheMessage->cm_fields['F'];
+                       TheMessage->cm_fields['F'] = NULL;
+               }
                CtdlFreeMessage(TheMessage);
                TheMessage = NULL;
 
@@ -1762,6 +1832,17 @@ int CtdlOutputMsg(long msg_num,          /* message number (local) to fetch */
        /* Ok, output the message now */
        if (retcode == CIT_OK)
                retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
+       if ((Author != NULL) && (*Author == NULL))
+       {
+               *Author = TheMessage->cm_fields['A'];
+               TheMessage->cm_fields['A'] = NULL;
+       }
+       if ((Address != NULL) && (*Address == NULL))
+       {       
+               *Address = TheMessage->cm_fields['F'];
+               TheMessage->cm_fields['F'] = NULL;
+       }
+
        CtdlFreeMessage(TheMessage);
 
        return(retcode);
@@ -1789,7 +1870,7 @@ char *qp_encode_email_addrs(char *source)
 
        if (source == NULL) return source;
        if (IsEmptyStr(source)) return source;
-       cit_backtrace();
+       if (MessageDebugEnabled != 0) cit_backtrace();
        MSG_syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
 
        AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
@@ -2541,7 +2622,7 @@ void cmd_msg0(char *cmdbuf)
        msgid = extract_long(cmdbuf, 0);
        headers_only = extract_int(cmdbuf, 1);
 
-       CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
+       CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0, NULL, NULL);
        return;
 }
 
@@ -2557,7 +2638,7 @@ void cmd_msg2(char *cmdbuf)
        msgid = extract_long(cmdbuf, 0);
        headers_only = extract_int(cmdbuf, 1);
 
-       CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
+       CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0, NULL, NULL);
 }
 
 
@@ -2611,7 +2692,7 @@ void cmd_msg4(char *cmdbuf)
 
        msgid = extract_long(cmdbuf, 0);
        extract_token(section, cmdbuf, 1, '|', sizeof section);
-       CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
+       CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0, NULL, NULL);
 }
 
 
@@ -2644,7 +2725,7 @@ void cmd_opna(char *cmdbuf)
        extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
        safestrncpy(CC->download_desired_section, desired_section,
                sizeof CC->download_desired_section);
-       CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
+       CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0, NULL, NULL);
 }                      
 
 
@@ -2660,8 +2741,8 @@ void cmd_dlat(char *cmdbuf)
        extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
        safestrncpy(CC->download_desired_section, desired_section,
                sizeof CC->download_desired_section);
-       CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
-}                      
+       CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0, NULL, NULL);
+}
 
 
 /*
@@ -3465,18 +3546,16 @@ long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
 }
 
 
-
-void aide_message (char *text, char *subject)
-{
-       quickie_message("Citadel",NULL,NULL,AIDEROOM,text,FMT_CITADEL,subject);
-}
-
-
 /*
  * Convenience function for generating small administrative messages.
  */
-void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text, 
-                    int format_type, const char *subject)
+void quickie_message(const char *from,
+                    const char *fromaddr,
+                    const char *to,
+                    char *room,
+                    const char *text, 
+                    int format_type,
+                    const char *subject)
 {
        struct CtdlMessage *msg;
        struct recptypes *recp = NULL;
@@ -3517,6 +3596,74 @@ void quickie_message(const char *from, const char *fromaddr, char *to, char *roo
        if (recp != NULL) free_recipients(recp);
 }
 
+void flood_protect_quickie_message(const char *from,
+                                  const char *fromaddr,
+                                  const char *to,
+                                  char *room,
+                                  const char *text, 
+                                  int format_type,
+                                  const char *subject,
+                                  int nCriterions,
+                                  const char **CritStr,
+                                  long *CritStrLen)
+{
+       int i;
+       struct UseTable ut;
+       u_char rawdigest[MD5_DIGEST_LEN];
+       struct MD5Context md5context;
+       StrBuf *guid;
+       struct cdbdata *cdbut;
+       char timestamp[64];
+       long tslen;
+       time_t ts = time(NULL);
+       time_t tsday = ts / (8*60*60); /* just care for a day... */
+
+       tslen = snprintf(timestamp, sizeof(timestamp), "%ld", tsday);
+       MD5Init(&md5context);
+
+       for (i = 0; i < nCriterions; i++)
+               MD5Update(&md5context,
+                         (const unsigned char*)CritStr[i], CritStrLen[i]);
+       MD5Update(&md5context,
+                 (const unsigned char*)timestamp, tslen);
+       MD5Final(rawdigest, &md5context);
+
+       guid = NewStrBufPlain(NULL,
+                             MD5_DIGEST_LEN * 2 + 12);
+       StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
+       StrBufAppendBufPlain(guid, HKEY("_fldpt"), 0);
+       if (StrLength(guid) > 40)
+               StrBufCutAt(guid, 40, NULL);
+       /* Find out if we've already sent a similar message */
+       memcpy(ut.ut_msgid, SKEY(guid));
+       ut.ut_timestamp = ts;
+
+       cdbut = cdb_fetch(CDB_USETABLE, SKEY(guid));
+
+       if (cdbut != NULL) {
+               /* yes, we did. flood protection kicks in. */
+               syslog(LOG_DEBUG,
+                      "not sending message again\n");
+               cdb_free(cdbut);
+       }
+
+       /* rewrite the record anyway, to update the timestamp */
+       cdb_store(CDB_USETABLE,
+                 SKEY(guid),
+                 &ut, sizeof(struct UseTable) );
+       
+       FreeStrBuf(&guid);
+
+       if (cdbut != NULL) return;
+       /* no, this message isn't sent recently; go ahead. */
+       quickie_message(from,
+                       fromaddr,
+                       to,
+                       room,
+                       text, 
+                       format_type,
+                       subject);
+}
 
 
 /*
@@ -3525,7 +3672,7 @@ void quickie_message(const char *from, const char *fromaddr, char *to, char *roo
 StrBuf *CtdlReadMessageBodyBuf(char *terminator,       /* token signalling EOT */
                               long tlen,
                               size_t maxlen,           /* maximum message length */
-                              char *exist,             /* if non-null, append to it;
+                              StrBuf *exist,           /* if non-null, append to it;
                                                           exist is ALWAYS freed  */
                               int crlf,                /* CRLF newlines instead of LF */
                               int *sock                /* socket handle or 0 for this session's client socket */
@@ -3542,8 +3689,7 @@ StrBuf *CtdlReadMessageBodyBuf(char *terminator,  /* token signalling EOT */
                Message = NewStrBufPlain(NULL, 4 * SIZ);
        }
        else {
-               Message = NewStrBufPlain(exist, -1);
-               free(exist);
+               Message = NewStrBufDup(exist);
        }
 
        /* Do we need to change leading ".." to "." for SMTP escaping? */
@@ -3606,7 +3752,7 @@ ReadAsyncMsg *NewAsyncMsg(const char *terminator, /* token signalling EOT */
                          long tlen,
                          size_t maxlen,                /* maximum message length */
                          size_t expectlen,             /* if we expect a message, how long should it be? */
-                         char *exist,                  /* if non-null, append to it;
+                         StrBuf *exist,                /* if non-null, append to it;
                                                           exist is ALWAYS freed  */
                          long eLen,                    /* length of exist */
                          int crlf                      /* CRLF newlines instead of LF */
@@ -3629,8 +3775,7 @@ ReadAsyncMsg *NewAsyncMsg(const char *terminator, /* token signalling EOT */
                NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
        }
        else {
-               NewMsg->MsgBuf = NewStrBufPlain(exist, eLen);
-               free(exist);
+               NewMsg->MsgBuf = NewStrBufDup(exist);
        }
        /* Do we need to change leading ".." to "." for SMTP escaping? */
        if ((tlen == 1) && (*terminator == '.')) {
@@ -3763,7 +3908,7 @@ eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
 char *CtdlReadMessageBody(char *terminator,    /* token signalling EOT */
                          long tlen,
                          size_t maxlen,                /* maximum message length */
-                         char *exist,          /* if non-null, append to it;
+                         StrBuf *exist,                /* if non-null, append to it;
                                                   exist is ALWAYS freed  */
                          int crlf,             /* CRLF newlines instead of LF */
                          int *sock             /* socket handle or 0 for this session's client socket */
@@ -3918,11 +4063,6 @@ struct CtdlMessage *CtdlMakeMessage(
        return(msg);
 }
 
-extern int netconfig_check_roomaccess(
-       char *errmsgbuf, 
-       size_t n,
-       const char* RemoteIdentifier); /* TODO: find a smarter way */
-
 /*
  * Check to see whether we have permission to post a message in the current
  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
@@ -3957,7 +4097,7 @@ int CtdlDoIHavePermissionToPostInThisRoom(
                }
                if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
 
-                       return netconfig_check_roomaccess(errmsgbuf, n, RemoteIdentifier);
+                       return CtdlNetconfigCheckRoomaccess(errmsgbuf, n, RemoteIdentifier);
                }
                return (0);
 
@@ -4013,7 +4153,7 @@ int CtdlCheckInternetMailPermission(struct ctdluser *who) {
        /* User flagged ok? */
        if (who->flags & US_INTERNET) return(2);
 
-       /* Aide level access? */
+       /* Admin level access? */
        if (who->axlevel >= AxAideU) return(3);
 
        /* No mail for you! */
@@ -4896,7 +5036,7 @@ void cmd_move(char *args)
         */
        permit = 0;
 
-       /* Aides can move/copy */
+       /* Admins can move/copy */
        if (CC->user.axlevel >= AxAideU) permit = 1;
 
        /* Room aides can move/copy */