2103 lines
40 KiB
C
2103 lines
40 KiB
C
#include <u.h>
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#include <libc.h>
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#include <auth.h>
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#include <bio.h>
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#include "imap4d.h"
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/*
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* these should be in libraries
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*/
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char *csquery(char *attr, char *val, char *rattr);
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/*
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* /lib/rfc/rfc2060 imap4rev1
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* /lib/rfc/rfc2683 is implementation advice
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* /lib/rfc/rfc2342 is namespace capability
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* /lib/rfc/rfc2222 is security protocols
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* /lib/rfc/rfc1731 is security protocols
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* /lib/rfc/rfc2221 is LOGIN-REFERRALS
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* /lib/rfc/rfc2193 is MAILBOX-REFERRALS
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* /lib/rfc/rfc2177 is IDLE capability
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* /lib/rfc/rfc2195 is CRAM-MD5 authentication
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* /lib/rfc/rfc2088 is LITERAL+ capability
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* /lib/rfc/rfc1760 is S/Key authentication
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*
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* outlook uses "Secure Password Authentication" aka ntlm authentication
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*
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* capabilities from nslocum
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* CAPABILITY IMAP4 IMAP4REV1 NAMESPACE IDLE SCAN SORT MAILBOX-REFERRALS LOGIN-REFERRALS AUTH=LOGIN THREAD=ORDEREDSUBJECT
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*/
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typedef struct ParseCmd ParseCmd;
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enum
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{
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UlongMax = 4294967295,
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};
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struct ParseCmd
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{
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char *name;
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void (*f)(char *tg, char *cmd);
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};
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static void appendCmd(char *tg, char *cmd);
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static void authenticateCmd(char *tg, char *cmd);
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static void capabilityCmd(char *tg, char *cmd);
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static void closeCmd(char *tg, char *cmd);
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static void copyCmd(char *tg, char *cmd);
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static void createCmd(char *tg, char *cmd);
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static void deleteCmd(char *tg, char *cmd);
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static void expungeCmd(char *tg, char *cmd);
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static void fetchCmd(char *tg, char *cmd);
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static void idleCmd(char *tg, char *cmd);
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static void listCmd(char *tg, char *cmd);
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static void loginCmd(char *tg, char *cmd);
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static void logoutCmd(char *tg, char *cmd);
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static void namespaceCmd(char *tg, char *cmd);
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static void noopCmd(char *tg, char *cmd);
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static void renameCmd(char *tg, char *cmd);
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static void searchCmd(char *tg, char *cmd);
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static void selectCmd(char *tg, char *cmd);
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static void statusCmd(char *tg, char *cmd);
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static void storeCmd(char *tg, char *cmd);
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static void subscribeCmd(char *tg, char *cmd);
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static void uidCmd(char *tg, char *cmd);
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static void unsubscribeCmd(char *tg, char *cmd);
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static void copyUCmd(char *tg, char *cmd, int uids);
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static void fetchUCmd(char *tg, char *cmd, int uids);
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static void searchUCmd(char *tg, char *cmd, int uids);
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static void storeUCmd(char *tg, char *cmd, int uids);
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static void imap4(int);
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static void status(int expungeable, int uids);
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static void cleaner(void);
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static void check(void);
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static int catcher(void*, char*);
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static Search *searchKey(int first);
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static Search *searchKeys(int first, Search *tail);
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static char *astring(void);
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static char *atomString(char *disallowed, char *initial);
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static char *atom(void);
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static void badsyn(void);
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static void clearcmd(void);
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static char *command(void);
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static void crnl(void);
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static Fetch *fetchAtt(char *s, Fetch *f);
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static Fetch *fetchWhat(void);
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static int flagList(void);
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static int flags(void);
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static int getc(void);
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static char *listmbox(void);
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static char *literal(void);
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static ulong litlen(void);
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static MsgSet *msgSet(int);
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static void mustBe(int c);
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static ulong number(int nonzero);
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static int peekc(void);
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static char *quoted(void);
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static void sectText(Fetch *f, int mimeOk);
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static ulong seqNo(void);
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static Store *storeWhat(void);
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static char *tag(void);
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static ulong uidNo(void);
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static void ungetc(void);
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static ParseCmd SNonAuthed[] =
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{
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{"capability", capabilityCmd},
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{"logout", logoutCmd},
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{"x-exit", logoutCmd},
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{"noop", noopCmd},
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{"login", loginCmd},
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{"authenticate", authenticateCmd},
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nil
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};
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static ParseCmd SAuthed[] =
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{
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{"capability", capabilityCmd},
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{"logout", logoutCmd},
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{"x-exit", logoutCmd},
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{"noop", noopCmd},
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{"append", appendCmd},
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{"create", createCmd},
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{"delete", deleteCmd},
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{"examine", selectCmd},
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{"select", selectCmd},
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{"idle", idleCmd},
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{"list", listCmd},
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{"lsub", listCmd},
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{"namespace", namespaceCmd},
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{"rename", renameCmd},
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{"status", statusCmd},
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{"subscribe", subscribeCmd},
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{"unsubscribe", unsubscribeCmd},
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nil
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};
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static ParseCmd SSelected[] =
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{
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{"capability", capabilityCmd},
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{"logout", logoutCmd},
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{"x-exit", logoutCmd},
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{"noop", noopCmd},
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{"append", appendCmd},
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{"create", createCmd},
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{"delete", deleteCmd},
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{"examine", selectCmd},
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{"select", selectCmd},
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{"idle", idleCmd},
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{"list", listCmd},
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{"lsub", listCmd},
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{"namespace", namespaceCmd},
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{"rename", renameCmd},
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{"status", statusCmd},
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{"subscribe", subscribeCmd},
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{"unsubscribe", unsubscribeCmd},
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{"check", noopCmd},
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{"close", closeCmd},
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{"copy", copyCmd},
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{"expunge", expungeCmd},
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{"fetch", fetchCmd},
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{"search", searchCmd},
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{"store", storeCmd},
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{"uid", uidCmd},
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nil
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};
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static char *atomStop = "(){%*\"\\";
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static Chalstate *chal;
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static int chaled;
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static ParseCmd *imapState;
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static jmp_buf parseJmp;
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static char *parseMsg;
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static int allowPass;
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static int allowCR;
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static int exiting;
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static QLock imaplock;
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static int idlepid = -1;
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Biobuf bout;
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Biobuf bin;
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char username[UserNameLen];
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char mboxDir[MboxNameLen];
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char *servername;
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char *site;
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char *remote;
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Box *selected;
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Bin *parseBin;
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int debug;
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void
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main(int argc, char *argv[])
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{
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char *s, *t;
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int preauth, n;
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Binit(&bin, 0, OREAD);
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Binit(&bout, 1, OWRITE);
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/* for auth */
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fmtinstall('H', encodefmt);
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fmtinstall('[', encodefmt);
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preauth = 0;
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allowPass = 0;
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allowCR = 0;
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ARGBEGIN{
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case 'a':
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preauth = 1;
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break;
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case 'd':
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site = ARGF();
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break;
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case 'c':
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allowCR = 1;
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break;
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case 'p':
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allowPass = 1;
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break;
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case 'r':
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remote = ARGF();
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break;
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case 's':
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servername = ARGF();
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break;
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case 'v':
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debug = 1;
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debuglog("imap4d debugging enabled\n");
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break;
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default:
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fprint(2, "usage: ip/imap4d [-acpv] [-d site] [-r remotehost] [-s servername]\n");
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bye("usage");
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break;
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}ARGEND
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if(allowPass && allowCR){
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fprint(2, "%s: -c and -p are mutually exclusive\n", argv0);
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bye("usage");
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}
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if(preauth)
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setupuser(nil);
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if(servername == nil){
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servername = csquery("sys", sysname(), "dom");
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if(servername == nil)
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servername = sysname();
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if(servername == nil){
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fprint(2, "ip/imap4d can't find server name: %r\n");
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bye("can't find system name");
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}
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}
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if(site == nil){
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t = getenv("site");
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if(t == nil)
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site = servername;
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else{
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n = strlen(t);
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s = strchr(servername, '.');
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if(s == nil)
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s = servername;
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else
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s++;
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n += strlen(s) + 2;
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site = emalloc(n);
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snprint(site, n, "%s.%s", t, s);
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}
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}
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rfork(RFNOTEG|RFREND);
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atnotify(catcher, 1);
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qlock(&imaplock);
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atexit(cleaner);
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imap4(preauth);
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}
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static void
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imap4(int preauth)
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{
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char *volatile tg;
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char *volatile cmd;
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ParseCmd *st;
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if(preauth){
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Bprint(&bout, "* preauth %s IMAP4rev1 server ready user %s authenticated\r\n", servername, username);
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imapState = SAuthed;
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}else{
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Bprint(&bout, "* OK %s IMAP4rev1 server ready\r\n", servername);
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imapState = SNonAuthed;
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}
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if(Bflush(&bout) < 0)
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writeErr();
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chaled = 0;
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tg = nil;
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cmd = nil;
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if(setjmp(parseJmp)){
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if(tg == nil)
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Bprint(&bout, "* bad empty command line: %s\r\n", parseMsg);
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else if(cmd == nil)
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Bprint(&bout, "%s BAD no command: %s\r\n", tg, parseMsg);
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else
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Bprint(&bout, "%s BAD %s %s\r\n", tg, cmd, parseMsg);
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clearcmd();
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if(Bflush(&bout) < 0)
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writeErr();
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binfree(&parseBin);
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}
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for(;;){
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if(mbLocked())
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bye("internal error: mailbox lock held");
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tg = nil;
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cmd = nil;
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tg = tag();
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mustBe(' ');
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cmd = atom();
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/*
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* note: outlook express is broken: it requires echoing the
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* command as part of matching response
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*/
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for(st = imapState; st->name != nil; st++){
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if(cistrcmp(cmd, st->name) == 0){
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(*st->f)(tg, cmd);
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break;
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}
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}
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if(st->name == nil){
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clearcmd();
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Bprint(&bout, "%s BAD %s illegal command\r\n", tg, cmd);
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}
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if(Bflush(&bout) < 0)
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writeErr();
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binfree(&parseBin);
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}
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}
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void
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bye(char *fmt, ...)
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{
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va_list arg;
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va_start(arg, fmt);
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Bprint(&bout, "* bye ");
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Bvprint(&bout, fmt, arg);
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Bprint(&bout, "\r\n");
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Bflush(&bout);
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exits("rob2");
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exits(0);
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}
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void
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parseErr(char *msg)
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{
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parseMsg = msg;
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longjmp(parseJmp, 1);
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}
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/*
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* an error occured while writing to the client
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*/
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void
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writeErr(void)
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{
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cleaner();
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_exits("connection closed");
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}
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static int
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catcher(void *v, char *msg)
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{
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USED(v);
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if(strstr(msg, "closed pipe") != nil)
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return 1;
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return 0;
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}
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/*
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* wipes out the idleCmd backgroung process if it is around.
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* this can only be called if the current proc has qlocked imaplock.
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* it must be the last piece of imap4d code executed.
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*/
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static void
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cleaner(void)
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{
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int i;
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if(idlepid < 0)
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return;
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exiting = 1;
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close(0);
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close(1);
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close(2);
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/*
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* the other proc is either stuck in a read, a sleep,
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* or is trying to lock imap4lock.
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* get him out of it so he can exit cleanly
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*/
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qunlock(&imaplock);
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for(i = 0; i < 4; i++)
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postnote(PNGROUP, getpid(), "die");
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}
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/*
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* send any pending status updates to the client
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* careful: shouldn't exit, because called by idle polling proc
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*
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* can't always send pending info
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* in particular, can't send expunge info
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* in response to a fetch, store, or search command.
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*
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* rfc2060 5.2: server must send mailbox size updates
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* rfc2060 5.2: server may send flag updates
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* rfc2060 5.5: servers prohibited from sending expunge while fetch, store, search in progress
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* rfc2060 7: in selected state, server checks mailbox for new messages as part of every command
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* sends untagged EXISTS and RECENT respsonses reflecting new size of the mailbox
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* should also send appropriate untagged FETCH and EXPUNGE messages if another agent
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* changes the state of any message flags or expunges any messages
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* rfc2060 7.4.1 expunge server response must not be sent when no command is in progress,
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* nor while responding to a fetch, stort, or search command (uid versions are ok)
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* command only "in progress" after entirely parsed.
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*
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* strategy for third party deletion of messages or of a mailbox
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*
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* deletion of a selected mailbox => act like all message are expunged
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* not strictly allowed by rfc2180, but close to method 3.2.
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*
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* renaming same as deletion
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*
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* copy
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* reject iff a deleted message is in the request
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*
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* search, store, fetch operations on expunged messages
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* ignore the expunged messages
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* return tagged no if referenced
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*/
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static void
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status(int expungeable, int uids)
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{
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int tell;
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if(!selected)
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return;
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tell = 0;
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if(expungeable)
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tell = expungeMsgs(selected, 1);
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if(selected->sendFlags)
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sendFlags(selected, uids);
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if(tell || selected->toldMax != selected->max){
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Bprint(&bout, "* %lud EXISTS\r\n", selected->max);
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selected->toldMax = selected->max;
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}
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if(tell || selected->toldRecent != selected->recent){
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Bprint(&bout, "* %lud RECENT\r\n", selected->recent);
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selected->toldRecent = selected->recent;
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}
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if(tell)
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closeImp(selected, checkBox(selected, 1));
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}
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/*
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* careful: can't exit, because called by idle polling proc
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*/
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static void
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check(void)
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{
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if(!selected)
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return;
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checkBox(selected, 0);
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status(1, 0);
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}
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static void
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appendCmd(char *tg, char *cmd)
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{
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char *mbox, head[128];
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ulong t, n, now;
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int flags, ok;
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mustBe(' ');
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mbox = astring();
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mustBe(' ');
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flags = 0;
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if(peekc() == '('){
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flags = flagList();
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mustBe(' ');
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}
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now = time(nil);
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if(peekc() == '"'){
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t = imap4DateTime(quoted());
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if(t == ~0)
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parseErr("illegal date format");
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mustBe(' ');
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if(t > now)
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t = now;
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}else
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t = now;
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n = litlen();
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mbox = mboxName(mbox);
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if(mbox == nil || !okMbox(mbox)){
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check();
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Bprint(&bout, "%s NO %s bad mailbox\r\n", tg, cmd);
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return;
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}
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if(!cdExists(mboxDir, mbox)){
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check();
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Bprint(&bout, "%s NO [TRYCREATE] %s mailbox does not exist\r\n", tg, cmd);
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return;
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}
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snprint(head, sizeof(head), "From %s %s", username, ctime(t));
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ok = appendSave(mbox, flags, head, &bin, n);
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crnl();
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check();
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if(ok)
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Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
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else
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Bprint(&bout, "%s NO %s message save failed\r\n", tg, cmd);
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}
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|
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static void
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authenticateCmd(char *tg, char *cmd)
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{
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char *s, *t;
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mustBe(' ');
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s = atom();
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crnl();
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auth_freechal(chal);
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chal = nil;
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if(cistrcmp(s, "cram-md5") == 0){
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t = cramauth();
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if(t == nil){
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Bprint(&bout, "%s OK %s\r\n", tg, cmd);
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imapState = SAuthed;
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}else
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Bprint(&bout, "%s NO %s failed %s\r\n", tg, cmd, t);
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}else
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Bprint(&bout, "%s NO %s unsupported authentication protocol\r\n", tg, cmd);
|
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}
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|
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static void
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capabilityCmd(char *tg, char *cmd)
|
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{
|
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crnl();
|
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check();
|
|
// nslocum's capabilities
|
|
// Bprint(&bout, "* CAPABILITY IMAP4 IMAP4REV1 NAMESPACE IDLE SCAN SORT MAILBOX-REFERRALS LOGIN-REFERRALS AUTH=LOGIN THREAD=ORDEREDSUBJECT\r\n");
|
|
Bprint(&bout, "* CAPABILITY IMAP4REV1 IDLE NAMESPACE AUTH=CRAM-MD5\r\n");
|
|
Bprint(&bout, "%s OK %s\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
closeCmd(char *tg, char *cmd)
|
|
{
|
|
crnl();
|
|
imapState = SAuthed;
|
|
closeBox(selected, 1);
|
|
selected = nil;
|
|
Bprint(&bout, "%s OK %s mailbox closed, now in authenticated state\r\n", tg, cmd);
|
|
}
|
|
|
|
/*
|
|
* note: message id's are before any pending expunges
|
|
*/
|
|
static void
|
|
copyCmd(char *tg, char *cmd)
|
|
{
|
|
copyUCmd(tg, cmd, 0);
|
|
}
|
|
|
|
static void
|
|
copyUCmd(char *tg, char *cmd, int uids)
|
|
{
|
|
MsgSet *ms;
|
|
char *uid, *mbox;
|
|
ulong max;
|
|
int ok;
|
|
|
|
mustBe(' ');
|
|
ms = msgSet(uids);
|
|
mustBe(' ');
|
|
mbox = astring();
|
|
crnl();
|
|
|
|
uid = "";
|
|
if(uids)
|
|
uid = "uid ";
|
|
|
|
mbox = mboxName(mbox);
|
|
if(mbox == nil || !okMbox(mbox)){
|
|
status(1, uids);
|
|
Bprint(&bout, "%s NO %s%s bad mailbox\r\n", tg, uid, cmd);
|
|
return;
|
|
}
|
|
if(!cdExists(mboxDir, mbox)){
|
|
check();
|
|
Bprint(&bout, "%s NO [TRYCREATE] %s mailbox does not exist\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
|
|
max = selected->max;
|
|
checkBox(selected, 0);
|
|
ok = forMsgs(selected, ms, max, uids, copyCheck, nil);
|
|
if(ok)
|
|
ok = forMsgs(selected, ms, max, uids, copySave, mbox);
|
|
|
|
status(1, uids);
|
|
if(ok)
|
|
Bprint(&bout, "%s OK %s%s completed\r\n", tg, uid, cmd);
|
|
else
|
|
Bprint(&bout, "%s NO %s%s failed\r\n", tg, uid, cmd);
|
|
}
|
|
|
|
static void
|
|
createCmd(char *tg, char *cmd)
|
|
{
|
|
char *mbox, *m;
|
|
int fd, slash;
|
|
|
|
mustBe(' ');
|
|
mbox = astring();
|
|
crnl();
|
|
check();
|
|
|
|
m = strchr(mbox, '\0');
|
|
slash = m != mbox && m[-1] == '/';
|
|
mbox = mboxName(mbox);
|
|
if(mbox == nil || !okMbox(mbox)){
|
|
Bprint(&bout, "%s NO %s bad mailbox\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
if(cistrcmp(mbox, "inbox") == 0){
|
|
Bprint(&bout, "%s NO %s cannot remotely create INBOX\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
if(access(mbox, AEXIST) >= 0){
|
|
Bprint(&bout, "%s NO %s mailbox already exists\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
|
|
fd = createBox(mbox, slash);
|
|
close(fd);
|
|
if(fd < 0)
|
|
Bprint(&bout, "%s NO %s cannot create mailbox %s\r\n", tg, cmd, mbox);
|
|
else
|
|
Bprint(&bout, "%s OK %s %s completed\r\n", tg, mbox, cmd);
|
|
}
|
|
|
|
static void
|
|
deleteCmd(char *tg, char *cmd)
|
|
{
|
|
char *mbox, *imp;
|
|
|
|
mustBe(' ');
|
|
mbox = astring();
|
|
crnl();
|
|
check();
|
|
|
|
mbox = mboxName(mbox);
|
|
if(mbox == nil || !okMbox(mbox)){
|
|
Bprint(&bout, "%s NO %s bad mailbox\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
|
|
imp = impName(mbox);
|
|
if(cistrcmp(mbox, "inbox") == 0
|
|
|| imp != nil && cdRemove(mboxDir, imp) < 0 && cdExists(mboxDir, imp)
|
|
|| cdRemove(mboxDir, mbox) < 0)
|
|
Bprint(&bout, "%s NO %s cannot delete mailbox %s\r\n", tg, cmd, mbox);
|
|
else
|
|
Bprint(&bout, "%s OK %s %s completed\r\n", tg, mbox, cmd);
|
|
}
|
|
|
|
static void
|
|
expungeCmd(char *tg, char *cmd)
|
|
{
|
|
int ok;
|
|
|
|
crnl();
|
|
ok = deleteMsgs(selected);
|
|
check();
|
|
if(ok)
|
|
Bprint(&bout, "%s OK %s messages erased\r\n", tg, cmd);
|
|
else
|
|
Bprint(&bout, "%s NO %s some messages not expunged\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
fetchCmd(char *tg, char *cmd)
|
|
{
|
|
fetchUCmd(tg, cmd, 0);
|
|
}
|
|
|
|
static void
|
|
fetchUCmd(char *tg, char *cmd, int uids)
|
|
{
|
|
Fetch *f;
|
|
MsgSet *ms;
|
|
MbLock *ml;
|
|
char *uid;
|
|
ulong max;
|
|
int ok;
|
|
|
|
mustBe(' ');
|
|
ms = msgSet(uids);
|
|
mustBe(' ');
|
|
f = fetchWhat();
|
|
crnl();
|
|
uid = "";
|
|
if(uids)
|
|
uid = "uid ";
|
|
max = selected->max;
|
|
ml = checkBox(selected, 1);
|
|
if(ml != nil)
|
|
forMsgs(selected, ms, max, uids, fetchSeen, f);
|
|
closeImp(selected, ml);
|
|
ok = ml != nil && forMsgs(selected, ms, max, uids, fetchMsg, f);
|
|
status(uids, uids);
|
|
if(ok)
|
|
Bprint(&bout, "%s OK %s%s completed\r\n", tg, uid, cmd);
|
|
else
|
|
Bprint(&bout, "%s NO %s%s failed\r\n", tg, uid, cmd);
|
|
}
|
|
|
|
static void
|
|
idleCmd(char *tg, char *cmd)
|
|
{
|
|
int c, pid;
|
|
|
|
crnl();
|
|
Bprint(&bout, "+ idling, waiting for done\r\n");
|
|
if(Bflush(&bout) < 0)
|
|
writeErr();
|
|
|
|
if(idlepid < 0){
|
|
pid = rfork(RFPROC|RFMEM|RFNOWAIT);
|
|
if(pid == 0){
|
|
for(;;){
|
|
qlock(&imaplock);
|
|
if(exiting)
|
|
break;
|
|
|
|
/*
|
|
* parent may have changed curDir, but it doesn't change our .
|
|
*/
|
|
resetCurDir();
|
|
|
|
check();
|
|
if(Bflush(&bout) < 0)
|
|
writeErr();
|
|
qunlock(&imaplock);
|
|
sleep(15*1000);
|
|
enableForwarding();
|
|
}
|
|
_exits("rob3");
|
|
_exits(0);
|
|
}
|
|
idlepid = pid;
|
|
}
|
|
|
|
qunlock(&imaplock);
|
|
|
|
/*
|
|
* clear out the next line, which is supposed to contain (case-insensitive)
|
|
* done\n
|
|
* this is special code since it has to dance with the idle polling proc
|
|
* and handle exiting correctly.
|
|
*/
|
|
for(;;){
|
|
c = getc();
|
|
if(c < 0){
|
|
qlock(&imaplock);
|
|
if(!exiting)
|
|
cleaner();
|
|
_exits("rob4");
|
|
_exits(0);
|
|
}
|
|
if(c == '\n')
|
|
break;
|
|
}
|
|
|
|
qlock(&imaplock);
|
|
if(exiting)
|
|
{_exits("rob5");
|
|
_exits(0);
|
|
}
|
|
|
|
/*
|
|
* child may have changed curDir, but it doesn't change our .
|
|
*/
|
|
resetCurDir();
|
|
|
|
check();
|
|
Bprint(&bout, "%s OK %s terminated\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
listCmd(char *tg, char *cmd)
|
|
{
|
|
char *s, *t, *ss, *ref, *mbox;
|
|
int n;
|
|
|
|
mustBe(' ');
|
|
s = astring();
|
|
mustBe(' ');
|
|
t = listmbox();
|
|
crnl();
|
|
check();
|
|
ref = mutf7str(s);
|
|
mbox = mutf7str(t);
|
|
if(ref == nil || mbox == nil){
|
|
Bprint(&bout, "%s BAD %s mailbox name not in modified utf-7\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* special request for hierarchy delimiter and root name
|
|
* root name appears to be name up to and including any delimiter,
|
|
* or the empty string, if there is no delimiter.
|
|
*
|
|
* this must change if the # namespace convention is supported.
|
|
*/
|
|
if(*mbox == '\0'){
|
|
s = strchr(ref, '/');
|
|
if(s == nil)
|
|
ref = "";
|
|
else
|
|
s[1] = '\0';
|
|
Bprint(&bout, "* %s (\\Noselect) \"/\" \"%s\"\r\n", cmd, ref);
|
|
Bprint(&bout, "%s OK %s\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* massage the listing name:
|
|
* clean up the components individually,
|
|
* then rip off componenets from the ref to
|
|
* take care of leading ..'s in the mbox.
|
|
*
|
|
* the cleanup can wipe out * followed by a ..
|
|
* tough luck if such a stupid pattern is given.
|
|
*/
|
|
cleanname(mbox);
|
|
if(strcmp(mbox, ".") == 0)
|
|
*mbox = '\0';
|
|
if(mbox[0] == '/')
|
|
*ref = '\0';
|
|
else if(*ref != '\0'){
|
|
cleanname(ref);
|
|
if(strcmp(ref, ".") == 0)
|
|
*ref = '\0';
|
|
}else
|
|
*ref = '\0';
|
|
while(*ref && isdotdot(mbox)){
|
|
s = strrchr(ref, '/');
|
|
if(s == nil)
|
|
s = ref;
|
|
if(isdotdot(s))
|
|
break;
|
|
*s = '\0';
|
|
mbox += 2;
|
|
if(*mbox == '/')
|
|
mbox++;
|
|
}
|
|
if(*ref == '\0'){
|
|
s = mbox;
|
|
ss = s;
|
|
}else{
|
|
n = strlen(ref) + strlen(mbox) + 2;
|
|
t = binalloc(&parseBin, n, 0);
|
|
if(t == nil)
|
|
parseErr("out of memory");
|
|
snprint(t, n, "%s/%s", ref, mbox);
|
|
s = t;
|
|
ss = s + strlen(ref);
|
|
}
|
|
|
|
/*
|
|
* only allow activity in /mail/box
|
|
*/
|
|
if(s[0] == '/' || isdotdot(s)){
|
|
Bprint(&bout, "%s NO illegal mailbox pattern\r\n", tg);
|
|
return;
|
|
}
|
|
|
|
if(cistrcmp(cmd, "lsub") == 0)
|
|
lsubBoxes(cmd, s, ss);
|
|
else
|
|
listBoxes(cmd, s, ss);
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
}
|
|
|
|
static char*
|
|
passCR(char*u, char*p)
|
|
{
|
|
static char Ebadch[] = "can't get challenge";
|
|
static char nchall[64];
|
|
static char response[64];
|
|
static Chalstate *ch = nil;
|
|
AuthInfo *ai;
|
|
|
|
again:
|
|
if (ch == nil){
|
|
if(!(ch = auth_challenge("proto=p9cr role=server user=%q", u)))
|
|
return Ebadch;
|
|
snprint(nchall, 64, " encrypt challenge: %s", ch->chal);
|
|
return nchall;
|
|
} else {
|
|
strncpy(response, p, 64);
|
|
ch->resp = response;
|
|
ch->nresp = strlen(response);
|
|
ai = auth_response(ch);
|
|
auth_freechal(ch);
|
|
ch = nil;
|
|
if (ai == nil)
|
|
goto again;
|
|
setupuser(ai);
|
|
return nil;
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
loginCmd(char *tg, char *cmd)
|
|
{
|
|
char *s, *t;
|
|
AuthInfo *ai;
|
|
char*r;
|
|
mustBe(' ');
|
|
s = astring(); /* uid */
|
|
mustBe(' ');
|
|
t = astring(); /* password */
|
|
crnl();
|
|
if(allowCR){
|
|
if ((r = passCR(s, t)) == nil){
|
|
Bprint(&bout, "%s OK %s succeeded\r\n", tg, cmd);
|
|
imapState = SAuthed;
|
|
} else {
|
|
Bprint(&bout, "* NO [ALERT] %s\r\n", r);
|
|
Bprint(&bout, "%s NO %s succeeded\r\n", tg, cmd);
|
|
}
|
|
return;
|
|
}
|
|
else if(allowPass){
|
|
if(ai = passLogin(s, t)){
|
|
setupuser(ai);
|
|
Bprint(&bout, "%s OK %s succeeded\r\n", tg, cmd);
|
|
imapState = SAuthed;
|
|
}else
|
|
Bprint(&bout, "%s NO %s failed check\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
Bprint(&bout, "%s NO %s plaintext passwords disallowed\r\n", tg, cmd);
|
|
}
|
|
|
|
/*
|
|
* logout or x-exit, which doesn't expunge the mailbox
|
|
*/
|
|
static void
|
|
logoutCmd(char *tg, char *cmd)
|
|
{
|
|
crnl();
|
|
|
|
if(cmd[0] != 'x' && selected){
|
|
closeBox(selected, 1);
|
|
selected = nil;
|
|
}
|
|
Bprint(&bout, "* bye\r\n");
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
exits("rob6");
|
|
exits(0);
|
|
}
|
|
|
|
static void
|
|
namespaceCmd(char *tg, char *cmd)
|
|
{
|
|
crnl();
|
|
check();
|
|
|
|
/*
|
|
* personal, other users, shared namespaces
|
|
* send back nil or descriptions of (prefix heirarchy-delim) for each case
|
|
*/
|
|
Bprint(&bout, "* NAMESPACE ((\"\" \"/\")) nil nil\r\n");
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
noopCmd(char *tg, char *cmd)
|
|
{
|
|
crnl();
|
|
check();
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
enableForwarding();
|
|
}
|
|
|
|
/*
|
|
* this is only a partial implementation
|
|
* should copy files to other directories,
|
|
* and copy & truncate inbox
|
|
*/
|
|
static void
|
|
renameCmd(char *tg, char *cmd)
|
|
{
|
|
char *from, *to;
|
|
int ok;
|
|
|
|
mustBe(' ');
|
|
from = astring();
|
|
mustBe(' ');
|
|
to = astring();
|
|
crnl();
|
|
check();
|
|
|
|
to = mboxName(to);
|
|
if(to == nil || !okMbox(to) || cistrcmp(to, "inbox") == 0){
|
|
Bprint(&bout, "%s NO %s bad mailbox destination name\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
if(access(to, AEXIST) >= 0){
|
|
Bprint(&bout, "%s NO %s mailbox already exists\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
from = mboxName(from);
|
|
if(from == nil || !okMbox(from)){
|
|
Bprint(&bout, "%s NO %s bad mailbox destination name\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
if(cistrcmp(from, "inbox") == 0)
|
|
ok = copyBox(from, to, 0);
|
|
else
|
|
ok = moveBox(from, to);
|
|
|
|
if(ok)
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
else
|
|
Bprint(&bout, "%s NO %s failed\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
searchCmd(char *tg, char *cmd)
|
|
{
|
|
searchUCmd(tg, cmd, 0);
|
|
}
|
|
|
|
static void
|
|
searchUCmd(char *tg, char *cmd, int uids)
|
|
{
|
|
Search rock;
|
|
Msg *m;
|
|
char *uid;
|
|
ulong id;
|
|
|
|
mustBe(' ');
|
|
rock.next = nil;
|
|
searchKeys(1, &rock);
|
|
crnl();
|
|
uid = "";
|
|
if(uids)
|
|
uid = "uid ";
|
|
if(rock.next != nil && rock.next->key == SKCharset){
|
|
if(cistrcmp(rock.next->s, "utf-8") != 0
|
|
&& cistrcmp(rock.next->s, "us-ascii") != 0){
|
|
Bprint(&bout, "%s NO [BADCHARSET] (\"US-ASCII\" \"UTF-8\") %s%s failed\r\n", tg, uid, cmd);
|
|
checkBox(selected, 0);
|
|
status(uids, uids);
|
|
return;
|
|
}
|
|
rock.next = rock.next->next;
|
|
}
|
|
Bprint(&bout, "* search");
|
|
for(m = selected->msgs; m != nil; m = m->next)
|
|
m->matched = searchMsg(m, rock.next);
|
|
for(m = selected->msgs; m != nil; m = m->next){
|
|
if(m->matched){
|
|
if(uids)
|
|
id = m->uid;
|
|
else
|
|
id = m->seq;
|
|
Bprint(&bout, " %lud", id);
|
|
}
|
|
}
|
|
Bprint(&bout, "\r\n");
|
|
checkBox(selected, 0);
|
|
status(uids, uids);
|
|
Bprint(&bout, "%s OK %s%s completed\r\n", tg, uid, cmd);
|
|
}
|
|
|
|
static void
|
|
selectCmd(char *tg, char *cmd)
|
|
{
|
|
Msg *m;
|
|
char *s, *mbox;
|
|
|
|
mustBe(' ');
|
|
mbox = astring();
|
|
crnl();
|
|
|
|
if(selected){
|
|
imapState = SAuthed;
|
|
closeBox(selected, 1);
|
|
selected = nil;
|
|
}
|
|
|
|
mbox = mboxName(mbox);
|
|
if(mbox == nil || !okMbox(mbox)){
|
|
Bprint(&bout, "%s NO %s bad mailbox\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
|
|
selected = openBox(mbox, "imap", cistrcmp(cmd, "select") == 0);
|
|
if(selected == nil){
|
|
Bprint(&bout, "%s NO %s can't open mailbox %s: %r\r\n", tg, cmd, mbox);
|
|
return;
|
|
}
|
|
|
|
imapState = SSelected;
|
|
|
|
Bprint(&bout, "* FLAGS (\\Seen \\Answered \\Flagged \\Deleted \\Draft)\r\n");
|
|
Bprint(&bout, "* %lud EXISTS\r\n", selected->max);
|
|
selected->toldMax = selected->max;
|
|
Bprint(&bout, "* %lud RECENT\r\n", selected->recent);
|
|
selected->toldRecent = selected->recent;
|
|
for(m = selected->msgs; m != nil; m = m->next){
|
|
if(!m->expunged && (m->flags & MSeen) != MSeen){
|
|
Bprint(&bout, "* OK [UNSEEN %ld]\r\n", m->seq);
|
|
break;
|
|
}
|
|
}
|
|
Bprint(&bout, "* OK [PERMANENTFLAGS (\\Seen \\Answered \\Flagged \\Draft \\Deleted)]\r\n");
|
|
Bprint(&bout, "* OK [UIDNEXT %ld]\r\n", selected->uidnext);
|
|
Bprint(&bout, "* OK [UIDVALIDITY %ld]\r\n", selected->uidvalidity);
|
|
s = "READ-ONLY";
|
|
if(selected->writable)
|
|
s = "READ-WRITE";
|
|
Bprint(&bout, "%s OK [%s] %s %s completed\r\n", tg, s, cmd, mbox);
|
|
}
|
|
|
|
static NamedInt statusItems[] =
|
|
{
|
|
{"MESSAGES", SMessages},
|
|
{"RECENT", SRecent},
|
|
{"UIDNEXT", SUidNext},
|
|
{"UIDVALIDITY", SUidValidity},
|
|
{"UNSEEN", SUnseen},
|
|
{nil, 0}
|
|
};
|
|
|
|
static void
|
|
statusCmd(char *tg, char *cmd)
|
|
{
|
|
Box *box;
|
|
Msg *m;
|
|
char *s, *mbox;
|
|
ulong v;
|
|
int si, i;
|
|
|
|
mustBe(' ');
|
|
mbox = astring();
|
|
mustBe(' ');
|
|
mustBe('(');
|
|
si = 0;
|
|
for(;;){
|
|
s = atom();
|
|
i = mapInt(statusItems, s);
|
|
if(i == 0)
|
|
parseErr("illegal status item");
|
|
si |= i;
|
|
if(peekc() == ')')
|
|
break;
|
|
mustBe(' ');
|
|
}
|
|
mustBe(')');
|
|
crnl();
|
|
|
|
mbox = mboxName(mbox);
|
|
if(mbox == nil || !okMbox(mbox)){
|
|
check();
|
|
Bprint(&bout, "%s NO %s bad mailbox\r\n", tg, cmd);
|
|
return;
|
|
}
|
|
|
|
box = openBox(mbox, "status", 1);
|
|
if(box == nil){
|
|
check();
|
|
Bprint(&bout, "%s NO [TRYCREATE] %s can't open mailbox %s: %r\r\n", tg, cmd, mbox);
|
|
return;
|
|
}
|
|
|
|
Bprint(&bout, "* STATUS %s (", mbox);
|
|
s = "";
|
|
for(i = 0; statusItems[i].name != nil; i++){
|
|
if(si & statusItems[i].v){
|
|
v = 0;
|
|
switch(statusItems[i].v){
|
|
case SMessages:
|
|
v = box->max;
|
|
break;
|
|
case SRecent:
|
|
v = box->recent;
|
|
break;
|
|
case SUidNext:
|
|
v = box->uidnext;
|
|
break;
|
|
case SUidValidity:
|
|
v = box->uidvalidity;
|
|
break;
|
|
case SUnseen:
|
|
v = 0;
|
|
for(m = box->msgs; m != nil; m = m->next)
|
|
if((m->flags & MSeen) != MSeen)
|
|
v++;
|
|
break;
|
|
default:
|
|
Bprint(&bout, ")");
|
|
bye("internal error: status item not implemented");
|
|
break;
|
|
}
|
|
Bprint(&bout, "%s%s %lud", s, statusItems[i].name, v);
|
|
s = " ";
|
|
}
|
|
}
|
|
Bprint(&bout, ")\r\n");
|
|
closeBox(box, 1);
|
|
|
|
check();
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
storeCmd(char *tg, char *cmd)
|
|
{
|
|
storeUCmd(tg, cmd, 0);
|
|
}
|
|
|
|
static void
|
|
storeUCmd(char *tg, char *cmd, int uids)
|
|
{
|
|
Store *st;
|
|
MsgSet *ms;
|
|
MbLock *ml;
|
|
char *uid;
|
|
ulong max;
|
|
int ok;
|
|
|
|
mustBe(' ');
|
|
ms = msgSet(uids);
|
|
mustBe(' ');
|
|
st = storeWhat();
|
|
crnl();
|
|
uid = "";
|
|
if(uids)
|
|
uid = "uid ";
|
|
max = selected->max;
|
|
ml = checkBox(selected, 1);
|
|
ok = ml != nil && forMsgs(selected, ms, max, uids, storeMsg, st);
|
|
closeImp(selected, ml);
|
|
status(uids, uids);
|
|
if(ok)
|
|
Bprint(&bout, "%s OK %s%s completed\r\n", tg, uid, cmd);
|
|
else
|
|
Bprint(&bout, "%s NO %s%s failed\r\n", tg, uid, cmd);
|
|
}
|
|
|
|
/*
|
|
* minimal implementation of subscribe
|
|
* all folders are automatically subscribed,
|
|
* and can't be unsubscribed
|
|
*/
|
|
static void
|
|
subscribeCmd(char *tg, char *cmd)
|
|
{
|
|
Box *box;
|
|
char *mbox;
|
|
int ok;
|
|
|
|
mustBe(' ');
|
|
mbox = astring();
|
|
crnl();
|
|
check();
|
|
mbox = mboxName(mbox);
|
|
ok = 0;
|
|
if(mbox != nil && okMbox(mbox)){
|
|
box = openBox(mbox, "subscribe", 0);
|
|
if(box != nil){
|
|
ok = subscribe(mbox, 's');
|
|
closeBox(box, 1);
|
|
}
|
|
}
|
|
if(!ok)
|
|
Bprint(&bout, "%s NO %s bad mailbox\r\n", tg, cmd);
|
|
else
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
uidCmd(char *tg, char *cmd)
|
|
{
|
|
char *sub;
|
|
|
|
mustBe(' ');
|
|
sub = atom();
|
|
if(cistrcmp(sub, "copy") == 0)
|
|
copyUCmd(tg, sub, 1);
|
|
else if(cistrcmp(sub, "fetch") == 0)
|
|
fetchUCmd(tg, sub, 1);
|
|
else if(cistrcmp(sub, "search") == 0)
|
|
searchUCmd(tg, sub, 1);
|
|
else if(cistrcmp(sub, "store") == 0)
|
|
storeUCmd(tg, sub, 1);
|
|
else{
|
|
clearcmd();
|
|
Bprint(&bout, "%s BAD %s illegal uid command %s\r\n", tg, cmd, sub);
|
|
}
|
|
}
|
|
|
|
static void
|
|
unsubscribeCmd(char *tg, char *cmd)
|
|
{
|
|
char *mbox;
|
|
|
|
mustBe(' ');
|
|
mbox = astring();
|
|
crnl();
|
|
check();
|
|
mbox = mboxName(mbox);
|
|
if(mbox == nil || !okMbox(mbox) || !subscribe(mbox, 'u'))
|
|
Bprint(&bout, "%s NO %s can't unsubscribe\r\n", tg, cmd);
|
|
else
|
|
Bprint(&bout, "%s OK %s completed\r\n", tg, cmd);
|
|
}
|
|
|
|
static void
|
|
badsyn(void)
|
|
{
|
|
parseErr("bad syntax");
|
|
}
|
|
|
|
static void
|
|
clearcmd(void)
|
|
{
|
|
int c;
|
|
|
|
for(;;){
|
|
c = getc();
|
|
if(c < 0)
|
|
bye("end of input");
|
|
if(c == '\n')
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
crnl(void)
|
|
{
|
|
int c;
|
|
|
|
c = getc();
|
|
if(c == '\n')
|
|
return;
|
|
if(c != '\r' || getc() != '\n')
|
|
badsyn();
|
|
}
|
|
|
|
static void
|
|
mustBe(int c)
|
|
{
|
|
if(getc() != c){
|
|
ungetc();
|
|
badsyn();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* flaglist : '(' ')' | '(' flags ')'
|
|
*/
|
|
static int
|
|
flagList(void)
|
|
{
|
|
int f;
|
|
|
|
mustBe('(');
|
|
f = 0;
|
|
if(peekc() != ')')
|
|
f = flags();
|
|
|
|
mustBe(')');
|
|
return f;
|
|
}
|
|
|
|
/*
|
|
* flags : flag | flags ' ' flag
|
|
* flag : '\' atom | atom
|
|
*/
|
|
static int
|
|
flags(void)
|
|
{
|
|
int ff, flags;
|
|
char *s;
|
|
int c;
|
|
|
|
flags = 0;
|
|
for(;;){
|
|
c = peekc();
|
|
if(c == '\\'){
|
|
mustBe('\\');
|
|
s = atomString(atomStop, "\\");
|
|
}else if(strchr(atomStop, c) != nil)
|
|
s = atom();
|
|
else
|
|
break;
|
|
ff = mapFlag(s);
|
|
if(ff == 0)
|
|
parseErr("flag not supported");
|
|
flags |= ff;
|
|
if(peekc() != ' ')
|
|
break;
|
|
mustBe(' ');
|
|
}
|
|
if(flags == 0)
|
|
parseErr("no flags given");
|
|
return flags;
|
|
}
|
|
|
|
/*
|
|
* storeWhat : osign 'FLAGS' ' ' storeflags
|
|
* | osign 'FLAGS.SILENT' ' ' storeflags
|
|
* osign :
|
|
* | '+' | '-'
|
|
* storeflags : flagList | flags
|
|
*/
|
|
static Store*
|
|
storeWhat(void)
|
|
{
|
|
int f;
|
|
char *s;
|
|
int c, w;
|
|
|
|
c = peekc();
|
|
if(c == '+' || c == '-')
|
|
mustBe(c);
|
|
else
|
|
c = 0;
|
|
s = atom();
|
|
w = 0;
|
|
if(cistrcmp(s, "flags") == 0)
|
|
w = STFlags;
|
|
else if(cistrcmp(s, "flags.silent") == 0)
|
|
w = STFlagsSilent;
|
|
else
|
|
parseErr("illegal store attribute");
|
|
mustBe(' ');
|
|
if(peekc() == '(')
|
|
f = flagList();
|
|
else
|
|
f = flags();
|
|
return mkStore(c, w, f);
|
|
}
|
|
|
|
/*
|
|
* fetchWhat : "ALL" | "FULL" | "FAST" | fetchAtt | '(' fetchAtts ')'
|
|
* fetchAtts : fetchAtt | fetchAtts ' ' fetchAtt
|
|
*/
|
|
static char *fetchAtom = "(){}%*\"\\[]";
|
|
static Fetch*
|
|
fetchWhat(void)
|
|
{
|
|
Fetch *f;
|
|
char *s;
|
|
|
|
if(peekc() == '('){
|
|
getc();
|
|
f = nil;
|
|
for(;;){
|
|
s = atomString(fetchAtom, "");
|
|
f = fetchAtt(s, f);
|
|
if(peekc() == ')')
|
|
break;
|
|
mustBe(' ');
|
|
}
|
|
getc();
|
|
return revFetch(f);
|
|
}
|
|
|
|
s = atomString(fetchAtom, "");
|
|
if(cistrcmp(s, "all") == 0)
|
|
f = mkFetch(FFlags, mkFetch(FInternalDate, mkFetch(FRfc822Size, mkFetch(FEnvelope, nil))));
|
|
else if(cistrcmp(s, "fast") == 0)
|
|
f = mkFetch(FFlags, mkFetch(FInternalDate, mkFetch(FRfc822Size, nil)));
|
|
else if(cistrcmp(s, "full") == 0)
|
|
f = mkFetch(FFlags, mkFetch(FInternalDate, mkFetch(FRfc822Size, mkFetch(FEnvelope, mkFetch(FBody, nil)))));
|
|
else
|
|
f = fetchAtt(s, nil);
|
|
return f;
|
|
}
|
|
|
|
/*
|
|
* fetchAtt : "ENVELOPE" | "FLAGS" | "INTERNALDATE"
|
|
* | "RFC822" | "RFC822.HEADER" | "RFC822.SIZE" | "RFC822.TEXT"
|
|
* | "BODYSTRUCTURE"
|
|
* | "UID"
|
|
* | "BODY"
|
|
* | "BODY" bodysubs
|
|
* | "BODY.PEEK" bodysubs
|
|
* bodysubs : sect
|
|
* | sect '<' number '.' nz-number '>'
|
|
* sect : '[' sectSpec ']'
|
|
* sectSpec : sectMsgText
|
|
* | sectPart
|
|
* | sectPart '.' sectText
|
|
* sectPart : nz-number
|
|
* | sectPart '.' nz-number
|
|
*/
|
|
static Fetch*
|
|
fetchAtt(char *s, Fetch *f)
|
|
{
|
|
NList *sect;
|
|
int c;
|
|
|
|
if(cistrcmp(s, "envelope") == 0)
|
|
return mkFetch(FEnvelope, f);
|
|
if(cistrcmp(s, "flags") == 0)
|
|
return mkFetch(FFlags, f);
|
|
if(cistrcmp(s, "internaldate") == 0)
|
|
return mkFetch(FInternalDate, f);
|
|
if(cistrcmp(s, "RFC822") == 0)
|
|
return mkFetch(FRfc822, f);
|
|
if(cistrcmp(s, "RFC822.header") == 0)
|
|
return mkFetch(FRfc822Head, f);
|
|
if(cistrcmp(s, "RFC822.size") == 0)
|
|
return mkFetch(FRfc822Size, f);
|
|
if(cistrcmp(s, "RFC822.text") == 0)
|
|
return mkFetch(FRfc822Text, f);
|
|
if(cistrcmp(s, "bodystructure") == 0)
|
|
return mkFetch(FBodyStruct, f);
|
|
if(cistrcmp(s, "uid") == 0)
|
|
return mkFetch(FUid, f);
|
|
|
|
if(cistrcmp(s, "body") == 0){
|
|
if(peekc() != '[')
|
|
return mkFetch(FBody, f);
|
|
f = mkFetch(FBodySect, f);
|
|
}else if(cistrcmp(s, "body.peek") == 0)
|
|
f = mkFetch(FBodyPeek, f);
|
|
else
|
|
parseErr("illegal fetch attribute");
|
|
|
|
mustBe('[');
|
|
c = peekc();
|
|
if(c >= '1' && c <= '9'){
|
|
sect = mkNList(number(1), nil);
|
|
while(peekc() == '.'){
|
|
getc();
|
|
c = peekc();
|
|
if(c >= '1' && c <= '9'){
|
|
sect = mkNList(number(1), sect);
|
|
}else{
|
|
break;
|
|
}
|
|
}
|
|
f->sect = revNList(sect);
|
|
}
|
|
if(peekc() != ']')
|
|
sectText(f, f->sect != nil);
|
|
mustBe(']');
|
|
|
|
if(peekc() != '<')
|
|
return f;
|
|
|
|
f->partial = 1;
|
|
mustBe('<');
|
|
f->start = number(0);
|
|
mustBe('.');
|
|
f->size = number(1);
|
|
mustBe('>');
|
|
return f;
|
|
}
|
|
|
|
/*
|
|
* sectText : sectMsgText | "MIME"
|
|
* sectMsgText : "HEADER"
|
|
* | "TEXT"
|
|
* | "HEADER.FIELDS" ' ' hdrList
|
|
* | "HEADER.FIELDS.NOT" ' ' hdrList
|
|
* hdrList : '(' hdrs ')'
|
|
* hdrs: : astring
|
|
* | hdrs ' ' astring
|
|
*/
|
|
static void
|
|
sectText(Fetch *f, int mimeOk)
|
|
{
|
|
SList *h;
|
|
char *s;
|
|
|
|
s = atomString(fetchAtom, "");
|
|
if(cistrcmp(s, "header") == 0){
|
|
f->part = FPHead;
|
|
return;
|
|
}
|
|
if(cistrcmp(s, "text") == 0){
|
|
f->part = FPText;
|
|
return;
|
|
}
|
|
if(mimeOk && cistrcmp(s, "mime") == 0){
|
|
f->part = FPMime;
|
|
return;
|
|
}
|
|
if(cistrcmp(s, "header.fields") == 0)
|
|
f->part = FPHeadFields;
|
|
else if(cistrcmp(s, "header.fields.not") == 0)
|
|
f->part = FPHeadFieldsNot;
|
|
else
|
|
parseErr("illegal fetch section text");
|
|
mustBe(' ');
|
|
mustBe('(');
|
|
h = nil;
|
|
for(;;){
|
|
h = mkSList(astring(), h);
|
|
if(peekc() == ')')
|
|
break;
|
|
mustBe(' ');
|
|
}
|
|
mustBe(')');
|
|
f->hdrs = revSList(h);
|
|
}
|
|
|
|
/*
|
|
* searchWhat : "CHARSET" ' ' astring searchkeys | searchkeys
|
|
* searchkeys : searchkey | searchkeys ' ' searchkey
|
|
* searchkey : "ALL" | "ANSWERED" | "DELETED" | "FLAGGED" | "NEW" | "OLD" | "RECENT"
|
|
* | "SEEN" | "UNANSWERED" | "UNDELETED" | "UNFLAGGED" | "DRAFT" | "UNDRAFT"
|
|
* | astrkey ' ' astring
|
|
* | datekey ' ' date
|
|
* | "KEYWORD" ' ' flag | "UNKEYWORD" flag
|
|
* | "LARGER" ' ' number | "SMALLER" ' ' number
|
|
* | "HEADER" astring ' ' astring
|
|
* | set | "UID" ' ' set
|
|
* | "NOT" ' ' searchkey
|
|
* | "OR" ' ' searchkey ' ' searchkey
|
|
* | '(' searchkeys ')'
|
|
* astrkey : "BCC" | "BODY" | "CC" | "FROM" | "SUBJECT" | "TEXT" | "TO"
|
|
* datekey : "BEFORE" | "ON" | "SINCE" | "SENTBEFORE" | "SENTON" | "SENTSINCE"
|
|
*/
|
|
static NamedInt searchMap[] =
|
|
{
|
|
{"ALL", SKAll},
|
|
{"ANSWERED", SKAnswered},
|
|
{"DELETED", SKDeleted},
|
|
{"FLAGGED", SKFlagged},
|
|
{"NEW", SKNew},
|
|
{"OLD", SKOld},
|
|
{"RECENT", SKRecent},
|
|
{"SEEN", SKSeen},
|
|
{"UNANSWERED", SKUnanswered},
|
|
{"UNDELETED", SKUndeleted},
|
|
{"UNFLAGGED", SKUnflagged},
|
|
{"DRAFT", SKDraft},
|
|
{"UNDRAFT", SKUndraft},
|
|
{"UNSEEN", SKUnseen},
|
|
{nil, 0}
|
|
};
|
|
|
|
static NamedInt searchMapStr[] =
|
|
{
|
|
{"CHARSET", SKCharset},
|
|
{"BCC", SKBcc},
|
|
{"BODY", SKBody},
|
|
{"CC", SKCc},
|
|
{"FROM", SKFrom},
|
|
{"SUBJECT", SKSubject},
|
|
{"TEXT", SKText},
|
|
{"TO", SKTo},
|
|
{nil, 0}
|
|
};
|
|
|
|
static NamedInt searchMapDate[] =
|
|
{
|
|
{"BEFORE", SKBefore},
|
|
{"ON", SKOn},
|
|
{"SINCE", SKSince},
|
|
{"SENTBEFORE", SKSentBefore},
|
|
{"SENTON", SKSentOn},
|
|
{"SENTSINCE", SKSentSince},
|
|
{nil, 0}
|
|
};
|
|
|
|
static NamedInt searchMapFlag[] =
|
|
{
|
|
{"KEYWORD", SKKeyword},
|
|
{"UNKEYWORD", SKUnkeyword},
|
|
{nil, 0}
|
|
};
|
|
|
|
static NamedInt searchMapNum[] =
|
|
{
|
|
{"SMALLER", SKSmaller},
|
|
{"LARGER", SKLarger},
|
|
{nil, 0}
|
|
};
|
|
|
|
static Search*
|
|
searchKeys(int first, Search *tail)
|
|
{
|
|
Search *s;
|
|
|
|
for(;;){
|
|
if(peekc() == '('){
|
|
getc();
|
|
tail = searchKeys(0, tail);
|
|
mustBe(')');
|
|
}else{
|
|
s = searchKey(first);
|
|
tail->next = s;
|
|
tail = s;
|
|
}
|
|
first = 0;
|
|
if(peekc() != ' ')
|
|
break;
|
|
getc();
|
|
}
|
|
return tail;
|
|
}
|
|
|
|
static Search*
|
|
searchKey(int first)
|
|
{
|
|
Search *sr, rock;
|
|
Tm tm;
|
|
char *a;
|
|
int i, c;
|
|
|
|
sr = binalloc(&parseBin, sizeof(Search), 1);
|
|
if(sr == nil)
|
|
parseErr("out of memory");
|
|
|
|
c = peekc();
|
|
if(c >= '0' && c <= '9'){
|
|
sr->key = SKSet;
|
|
sr->set = msgSet(0);
|
|
return sr;
|
|
}
|
|
|
|
a = atom();
|
|
if(i = mapInt(searchMap, a))
|
|
sr->key = i;
|
|
else if(i = mapInt(searchMapStr, a)){
|
|
if(!first && i == SKCharset)
|
|
parseErr("illegal search key");
|
|
sr->key = i;
|
|
mustBe(' ');
|
|
sr->s = astring();
|
|
}else if(i = mapInt(searchMapDate, a)){
|
|
sr->key = i;
|
|
mustBe(' ');
|
|
c = peekc();
|
|
if(c == '"')
|
|
getc();
|
|
a = atom();
|
|
if(!imap4Date(&tm, a))
|
|
parseErr("bad date format");
|
|
sr->year = tm.year;
|
|
sr->mon = tm.mon;
|
|
sr->mday = tm.mday;
|
|
if(c == '"')
|
|
mustBe('"');
|
|
}else if(i = mapInt(searchMapFlag, a)){
|
|
sr->key = i;
|
|
mustBe(' ');
|
|
c = peekc();
|
|
if(c == '\\'){
|
|
mustBe('\\');
|
|
a = atomString(atomStop, "\\");
|
|
}else
|
|
a = atom();
|
|
i = mapFlag(a);
|
|
if(i == 0)
|
|
parseErr("flag not supported");
|
|
sr->num = i;
|
|
}else if(i = mapInt(searchMapNum, a)){
|
|
sr->key = i;
|
|
mustBe(' ');
|
|
sr->num = number(0);
|
|
}else if(cistrcmp(a, "HEADER") == 0){
|
|
sr->key = SKHeader;
|
|
mustBe(' ');
|
|
sr->hdr = astring();
|
|
mustBe(' ');
|
|
sr->s = astring();
|
|
}else if(cistrcmp(a, "UID") == 0){
|
|
sr->key = SKUid;
|
|
mustBe(' ');
|
|
sr->set = msgSet(0);
|
|
}else if(cistrcmp(a, "NOT") == 0){
|
|
sr->key = SKNot;
|
|
mustBe(' ');
|
|
rock.next = nil;
|
|
searchKeys(0, &rock);
|
|
sr->left = rock.next;
|
|
}else if(cistrcmp(a, "OR") == 0){
|
|
sr->key = SKOr;
|
|
mustBe(' ');
|
|
rock.next = nil;
|
|
searchKeys(0, &rock);
|
|
sr->left = rock.next;
|
|
mustBe(' ');
|
|
rock.next = nil;
|
|
searchKeys(0, &rock);
|
|
sr->right = rock.next;
|
|
}else
|
|
parseErr("illegal search key");
|
|
return sr;
|
|
}
|
|
|
|
/*
|
|
* set : seqno
|
|
* | seqno ':' seqno
|
|
* | set ',' set
|
|
* seqno: nz-number
|
|
* | '*'
|
|
*
|
|
*/
|
|
static MsgSet*
|
|
msgSet(int uids)
|
|
{
|
|
MsgSet head, *last, *ms;
|
|
ulong from, to;
|
|
|
|
last = &head;
|
|
head.next = nil;
|
|
for(;;){
|
|
from = uids ? uidNo() : seqNo();
|
|
to = from;
|
|
if(peekc() == ':'){
|
|
getc();
|
|
to = uids ? uidNo() : seqNo();
|
|
}
|
|
ms = binalloc(&parseBin, sizeof(MsgSet), 0);
|
|
if(ms == nil)
|
|
parseErr("out of memory");
|
|
ms->from = from;
|
|
ms->to = to;
|
|
ms->next = nil;
|
|
last->next = ms;
|
|
last = ms;
|
|
if(peekc() != ',')
|
|
break;
|
|
getc();
|
|
}
|
|
return head.next;
|
|
}
|
|
|
|
static ulong
|
|
seqNo(void)
|
|
{
|
|
if(peekc() == '*'){
|
|
getc();
|
|
return ~0UL;
|
|
}
|
|
return number(1);
|
|
}
|
|
|
|
static ulong
|
|
uidNo(void)
|
|
{
|
|
if(peekc() == '*'){
|
|
getc();
|
|
return ~0UL;
|
|
}
|
|
return number(0);
|
|
}
|
|
|
|
/*
|
|
* 7 bit, non-ctl chars, no (){%*"\
|
|
* NIL is special case for nstring or parenlist
|
|
*/
|
|
static char *
|
|
atom(void)
|
|
{
|
|
return atomString(atomStop, "");
|
|
}
|
|
|
|
/*
|
|
* like an atom, but no +
|
|
*/
|
|
static char *
|
|
tag(void)
|
|
{
|
|
return atomString("+(){%*\"\\", "");
|
|
}
|
|
|
|
/*
|
|
* string or atom allowing %*
|
|
*/
|
|
static char *
|
|
listmbox(void)
|
|
{
|
|
int c;
|
|
|
|
c = peekc();
|
|
if(c == '{')
|
|
return literal();
|
|
if(c == '"')
|
|
return quoted();
|
|
return atomString("(){\"\\", "");
|
|
}
|
|
|
|
/*
|
|
* string or atom
|
|
*/
|
|
static char *
|
|
astring(void)
|
|
{
|
|
int c;
|
|
|
|
c = peekc();
|
|
if(c == '{')
|
|
return literal();
|
|
if(c == '"')
|
|
return quoted();
|
|
return atom();
|
|
}
|
|
|
|
/*
|
|
* 7 bit, non-ctl chars, none from exception list
|
|
*/
|
|
static char *
|
|
atomString(char *disallowed, char *initial)
|
|
{
|
|
char *s;
|
|
int c, ns, as;
|
|
|
|
ns = strlen(initial);
|
|
s = binalloc(&parseBin, ns + StrAlloc, 0);
|
|
if(s == nil)
|
|
parseErr("out of memory");
|
|
strcpy(s, initial);
|
|
as = ns + StrAlloc;
|
|
for(;;){
|
|
c = getc();
|
|
if(c <= ' ' || c >= 0x7f || strchr(disallowed, c) != nil){
|
|
ungetc();
|
|
break;
|
|
}
|
|
s[ns++] = c;
|
|
if(ns >= as){
|
|
s = bingrow(&parseBin, s, as, as + StrAlloc, 0);
|
|
if(s == nil)
|
|
parseErr("out of memory");
|
|
as += StrAlloc;
|
|
}
|
|
}
|
|
if(ns == 0)
|
|
badsyn();
|
|
s[ns] = '\0';
|
|
return s;
|
|
}
|
|
|
|
/*
|
|
* quoted: '"' chars* '"'
|
|
* chars: 1-128 except \r and \n
|
|
*/
|
|
static char *
|
|
quoted(void)
|
|
{
|
|
char *s;
|
|
int c, ns, as;
|
|
|
|
mustBe('"');
|
|
s = binalloc(&parseBin, StrAlloc, 0);
|
|
if(s == nil)
|
|
parseErr("out of memory");
|
|
as = StrAlloc;
|
|
ns = 0;
|
|
for(;;){
|
|
c = getc();
|
|
if(c == '"')
|
|
break;
|
|
if(c < 1 || c > 0x7f || c == '\r' || c == '\n')
|
|
badsyn();
|
|
if(c == '\\'){
|
|
c = getc();
|
|
if(c != '\\' && c != '"')
|
|
badsyn();
|
|
}
|
|
s[ns++] = c;
|
|
if(ns >= as){
|
|
s = bingrow(&parseBin, s, as, as + StrAlloc, 0);
|
|
if(s == nil)
|
|
parseErr("out of memory");
|
|
as += StrAlloc;
|
|
}
|
|
}
|
|
s[ns] = '\0';
|
|
return s;
|
|
}
|
|
|
|
/*
|
|
* litlen: {number}\r\n
|
|
*/
|
|
static ulong
|
|
litlen(void)
|
|
{
|
|
ulong v;
|
|
|
|
mustBe('{');
|
|
v = number(0);
|
|
mustBe('}');
|
|
crnl();
|
|
return v;
|
|
}
|
|
|
|
/*
|
|
* literal: litlen data<0:litlen>
|
|
*/
|
|
static char *
|
|
literal(void)
|
|
{
|
|
char *s;
|
|
ulong v;
|
|
|
|
v = litlen();
|
|
s = binalloc(&parseBin, v+1, 0);
|
|
if(s == nil)
|
|
parseErr("out of memory");
|
|
Bprint(&bout, "+ Ready for literal data\r\n");
|
|
if(Bflush(&bout) < 0)
|
|
writeErr();
|
|
if(v != 0 && Bread(&bin, s, v) != v)
|
|
badsyn();
|
|
s[v] = '\0';
|
|
return s;
|
|
}
|
|
|
|
/*
|
|
* digits; number is 32 bits
|
|
*/
|
|
static ulong
|
|
number(int nonzero)
|
|
{
|
|
ulong v;
|
|
int c, first;
|
|
|
|
v = 0;
|
|
first = 1;
|
|
for(;;){
|
|
c = getc();
|
|
if(c < '0' || c > '9'){
|
|
ungetc();
|
|
if(first)
|
|
badsyn();
|
|
break;
|
|
}
|
|
if(nonzero && first && c == '0')
|
|
badsyn();
|
|
c -= '0';
|
|
first = 0;
|
|
if(v > UlongMax/10 || v == UlongMax/10 && c > UlongMax%10)
|
|
parseErr("number out of range\r\n");
|
|
v = v * 10 + c;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static int
|
|
getc(void)
|
|
{
|
|
return Bgetc(&bin);
|
|
}
|
|
|
|
static void
|
|
ungetc(void)
|
|
{
|
|
Bungetc(&bin);
|
|
}
|
|
|
|
static int
|
|
peekc(void)
|
|
{
|
|
int c;
|
|
|
|
c = Bgetc(&bin);
|
|
Bungetc(&bin);
|
|
return c;
|
|
}
|
|
|