--- /dev/null
+/*
+ * Utility functions for the IMAP module.
+ *
+ * Copyright (c) 2001-2017 by the citadel.org team and others, except for
+ * most of the UTF7 and UTF8 handling code which was lifted from Evolution.
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define SHOW_ME_VAPPEND_PRINTF
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdarg.h>
+#include <libcitadel.h>
+#include "../../citadel.h"
+#include "../../sysdep_decls.h"
+#include "../../internet_addressing.h"
+#include "serv_imap.h"
+#include "imap_tools.h"
+#include "../../ctdl_module.h"
+
+/* String handling helpers */
+
+/* This code uses some pretty nasty string manipulation. To make everything
+ * manageable, we use this semi-high-level string manipulation API. Strings are
+ * always \0-terminated, despite the fact that we keep track of the size.
+ */
+struct string {
+ char* buffer;
+ int maxsize;
+ int size;
+};
+
+static void string_init(struct string* s, char* buf, int bufsize)
+{
+ s->buffer = buf;
+ s->maxsize = bufsize-1;
+ s->size = strlen(buf);
+}
+
+static char* string_end(struct string* s)
+{
+ return s->buffer + s->size;
+}
+
+/* Append a UTF8 string of a particular length (in bytes). -1 to autocalculate. */
+
+static void string_append_sn(struct string* s, char* p, int len)
+{
+ if (len == -1)
+ len = strlen(p);
+ if ((s->size+len) > s->maxsize)
+ len = s->maxsize - s->size;
+ memcpy(s->buffer + s->size, p, len);
+ s->size += len;
+ s->buffer[s->size] = '\0';
+}
+
+/* As above, always autocalculate. */
+
+#define string_append_s(s, p) string_append_sn((s), (p), -1)
+
+/* Appends a UTF8 character --- which may make the size change by more than 1!
+ * If the string overflows, the last character may become invalid. */
+
+static void string_append_c(struct string* s, int c)
+{
+ char UmlChar[5];
+ int len = 0;
+
+ /* Don't do anything if there's no room. */
+
+ if (s->size == s->maxsize)
+ return;
+
+ if (c <= 0x7F)
+ {
+ /* This is the most common case, so we optimise it. */
+
+ s->buffer[s->size++] = c;
+ s->buffer[s->size] = 0;
+ return;
+ }
+ else if (c <= 0x7FF)
+ {
+ UmlChar[0] = 0xC0 | (c >> 6);
+ UmlChar[1] = 0x80 | (c & 0x3F);
+ len = 2;
+ }
+ else if (c <= 0xFFFF)
+ {
+ UmlChar[0] = 0xE0 | (c >> 12);
+ UmlChar[1] = 0x80 | ((c >> 6) & 0x3f);
+ UmlChar[2] = 0x80 | (c & 0x3f);
+ len = 3;
+ }
+ else
+ {
+ UmlChar[0] = 0xf0 | c >> 18;
+ UmlChar[1] = 0x80 | ((c >> 12) & 0x3f);
+ UmlChar[2] = 0x80 | ((c >> 6) & 0x3f);
+ UmlChar[3] = 0x80 | (c & 0x3f);
+ len = 4;
+ }
+
+ string_append_sn(s, UmlChar, len);
+}
+
+/* Reads a UTF8 character from a char*, advancing the pointer. */
+
+int utf8_getc(char** ptr)
+{
+ unsigned char* p = (unsigned char*) *ptr;
+ unsigned char c, r;
+ int v, m;
+
+ for (;;)
+ {
+ r = *p++;
+ loop:
+ if (r < 0x80)
+ {
+ *ptr = (char*) p;
+ v = r;
+ break;
+ }
+ else if (r < 0xf8)
+ {
+ /* valid start char? (max 4 octets) */
+ v = r;
+ m = 0x7f80; /* used to mask out the length bits */
+ do {
+ c = *p++;
+ if ((c & 0xc0) != 0x80)
+ {
+ r = c;
+ goto loop;
+ }
+ v = (v<<6) | (c & 0x3f);
+ r<<=1;
+ m<<=5;
+ } while (r & 0x40);
+
+ *ptr = (char*)p;
+
+ v &= ~m;
+ break;
+ }
+ }
+
+ return v;
+}
+
+/* IMAP name safety */
+
+/* IMAP has certain special requirements in its character set, which means we
+ * have to do a fair bit of work to convert Citadel's UTF8 strings to IMAP
+ * strings. The next two routines (and their data tables) do that.
+ */
+
+static char *utf7_alphabet =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,";
+
+static unsigned char utf7_rank[256] = {
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3E,0x3F,0xFF,0xFF,0xFF,
+ 0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,
+ 0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
+ 0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+};
+
+/* Base64 helpers. */
+
+static void utf7_closeb64(struct string* out, int v, int i)
+{
+ int x;
+
+ if (i > 0)
+ {
+ x = (v << (6-i)) & 0x3F;
+ string_append_c(out, utf7_alphabet[x]);
+ }
+ string_append_c(out, '-');
+}
+
+/* Convert from a Citadel name to an IMAP-safe name. Returns the end
+ * of the destination.
+ */
+static char* toimap(char* destp, char* destend, char* src)
+{
+ struct string dest;
+ int state = 0;
+ int v = 0;
+ int i = 0;
+
+ *destp = 0;
+ string_init(&dest, destp, destend-destp);
+ /* syslog(LOG_DEBUG, "toimap %s", src); */
+
+ for (;;)
+ {
+ int c = utf8_getc(&src);
+ if (c == '\0')
+ break;
+
+ if (c >= 0x20 && c <= 0x7e)
+ {
+ if (state == 1)
+ {
+ utf7_closeb64(&dest, v, i);
+ state = 0;
+ i = 0;
+ }
+
+ switch (c)
+ {
+ case '&':
+ string_append_sn(&dest, "&-", 2);
+ break;
+
+ case '/':
+ /* Citadel extension: / becomes |, because /
+ * isn't valid as part of an IMAP name. */
+
+ c = '|';
+ goto defaultcase;
+
+ case '\\':
+ /* Citadel extension: backslashes mark folder
+ * seperators in the IMAP subfolder emulation
+ * hack. We turn them into / characters,
+ * *except* if it's the last character in the
+ * string. */
+
+ if (*src != '\0')
+ c = '/';
+ /* fall through */
+
+ default:
+ defaultcase:
+ string_append_c(&dest, c);
+ }
+ }
+ else
+ {
+ if (state == 0)
+ {
+ string_append_c(&dest, '&');
+ state = 1;
+ }
+ v = (v << 16) | c;
+ i += 16;
+ while (i >= 6)
+ {
+ int x = (v >> (i-6)) & 0x3f;
+ string_append_c(&dest, utf7_alphabet[x]);
+ i -= 6;
+ }
+ }
+ }
+
+ if (state == 1)
+ utf7_closeb64(&dest, v, i);
+ /* syslog(LOG_DEBUG, " -> %s", destp); */
+ return string_end(&dest);
+}
+
+/* Convert from an IMAP-safe name back into a Citadel name. Returns the end of the destination. */
+
+static int cfrommap(int c);
+static char* fromimap(char* destp, char* destend, const char* src)
+{
+ struct string dest;
+ unsigned const char *p = (unsigned const char*) src;
+ int v = 0;
+ int i = 0;
+ int state = 0;
+ int c;
+
+ *destp = 0;
+ string_init(&dest, destp, destend-destp);
+ /* syslog(LOG_DEBUG, "fromimap %s", src); */
+
+ do {
+ c = *p++;
+ switch (state)
+ {
+ case 0:
+ /* US-ASCII characters. */
+
+ if (c == '&')
+ state = 1;
+ else
+ string_append_c(&dest, cfrommap(c));
+ break;
+
+ case 1:
+ if (c == '-')
+ {
+ string_append_c(&dest, '&');
+ state = 0;
+ }
+ else if (utf7_rank[c] != 0xff)
+ {
+ v = utf7_rank[c];
+ i = 6;
+ state = 2;
+ }
+ else
+ {
+ /* invalid char */
+ string_append_sn(&dest, "&-", 2);
+ state = 0;
+ }
+ break;
+
+ case 2:
+ if (c == '-')
+ state = 0;
+ else if (utf7_rank[c] != 0xFF)
+ {
+ v = (v<<6) | utf7_rank[c];
+ i += 6;
+ if (i >= 16)
+ {
+ int x = (v >> (i-16)) & 0xFFFF;
+ string_append_c(&dest, cfrommap(x));
+ i -= 16;
+ }
+ }
+ else
+ {
+ string_append_c(&dest, cfrommap(c));
+ state = 0;
+ }
+ break;
+ }
+ } while (c != '\0');
+
+ /* syslog(LOG_DEBUG, " -> %s", destp); */
+ return string_end(&dest);
+}
+
+/* Undoes the special character conversion. */
+static int cfrommap(int c)
+{
+ switch (c)
+ {
+ case '|': return '/';
+ case '/': return '\\';
+ }
+ return c;
+}
+
+
+/* Break a command down into tokens, unquoting any escaped characters. */
+void MakeStringOf(StrBuf *Buf, int skip)
+{
+ int i;
+ citimap_command *Cmd = &IMAP->Cmd;
+
+ for (i=skip; i<Cmd->num_parms; ++i) {
+ StrBufAppendBufPlain(Buf, Cmd->Params[i].Key, Cmd->Params[i].len, 0);
+ if (i < (Cmd->num_parms-1)) StrBufAppendBufPlain(Buf, HKEY(" "), 0);
+ }
+}
+
+
+void TokenCutRight(citimap_command *Cmd,
+ ConstStr *CutMe,
+ int n)
+{
+ const char *CutAt;
+
+ if (CutMe->len < n) {
+ CutAt = CutMe->Key;
+ CutMe->len = 0;
+ }
+ else {
+ CutAt = CutMe->Key + CutMe->len - n;
+ CutMe->len -= n;
+ }
+ StrBufPeek(Cmd->CmdBuf, CutAt, -1, '\0');
+}
+
+void TokenCutLeft(citimap_command *Cmd,
+ ConstStr *CutMe,
+ int n)
+{
+ if (CutMe->len < n) {
+ CutMe->Key += CutMe->len;
+ CutMe->len = 0;
+ }
+ else {
+ CutMe->Key += n;
+ CutMe->len -= n;
+ }
+}
+
+
+
+int CmdAdjust(citimap_command *Cmd,
+ int nArgs,
+ int Realloc)
+{
+ ConstStr *Params;
+ if (nArgs > Cmd->avail_parms) {
+ Params = (ConstStr*) malloc(sizeof(ConstStr) * nArgs);
+ if (Realloc) {
+ memcpy(Params,
+ Cmd->Params,
+ sizeof(ConstStr) * Cmd->avail_parms);
+
+ memset(Cmd->Params +
+ sizeof(ConstStr) * Cmd->avail_parms,
+ 0,
+ sizeof(ConstStr) * nArgs -
+ sizeof(ConstStr) * Cmd->avail_parms
+ );
+ }
+ else {
+ Cmd->num_parms = 0;
+ memset(Params, 0,
+ sizeof(ConstStr) * nArgs);
+ }
+ Cmd->avail_parms = nArgs;
+ if (Cmd->Params != NULL)
+ free (Cmd->Params);
+ Cmd->Params = Params;
+ }
+ else {
+ if (!Realloc) {
+ memset(Cmd->Params,
+ 0,
+ sizeof(ConstStr) * Cmd->avail_parms);
+ Cmd->num_parms = 0;
+ }
+ }
+ return Cmd->avail_parms;
+}
+
+int imap_parameterize(citimap_command *Cmd)
+{
+ int nArgs;
+ const char *In, *End;
+
+ In = ChrPtr(Cmd->CmdBuf);
+ End = In + StrLength(Cmd->CmdBuf);
+
+ /* we start with 10 chars per arg, maybe we need to realloc later. */
+ nArgs = StrLength(Cmd->CmdBuf) / 10 + 10;
+ nArgs = CmdAdjust(Cmd, nArgs, 0);
+ while (In < End)
+ {
+ /* Skip whitespace. */
+ while (isspace(*In))
+ In++;
+ if (*In == '\0')
+ break;
+
+ /* Found the start of a token. */
+
+ Cmd->Params[Cmd->num_parms].Key = In;
+
+ /* Read in the token. */
+
+ for (;;)
+ {
+ if (isspace(*In))
+ break;
+
+ if (*In == '\"')
+ {
+ /* Found a quoted section. */
+
+ Cmd->Params[Cmd->num_parms].Key++;
+ //In++;
+ for (;;)
+ {
+ In++;
+ if (*In == '\"') {
+ StrBufPeek(Cmd->CmdBuf, In, -1, '\0');
+ break;
+ }
+ else if (*In == '\\')
+ In++;
+
+ if (*In == '\0') {
+ Cmd->Params[Cmd->num_parms].len =
+ In - Cmd->Params[Cmd->num_parms].Key;
+ Cmd->num_parms++;
+ return Cmd->num_parms;
+ }
+ }
+ break;
+ }
+ else if (*In == '\\')
+ {
+ In++;
+ }
+
+ if (*In == '\0') {
+ Cmd->Params[Cmd->num_parms].len =
+ In - Cmd->Params[Cmd->num_parms].Key;
+ Cmd->num_parms++;
+ return Cmd->num_parms;
+ }
+ In++;
+ }
+ StrBufPeek(Cmd->CmdBuf, In, -1, '\0');
+ Cmd->Params[Cmd->num_parms].len =
+ In - Cmd->Params[Cmd->num_parms].Key;
+ if (Cmd->num_parms + 1 >= Cmd->avail_parms) {
+ nArgs = CmdAdjust(Cmd, nArgs * 2, 1);
+ }
+ Cmd->num_parms ++;
+ In++;
+ }
+ return Cmd->num_parms;
+}
+
+
+/* Convert a struct ctdlroom to an IMAP-compatible mailbox name. */
+long imap_mailboxname(char *buf, int bufsize, struct ctdlroom *qrbuf)
+{
+ char* bufend = buf+bufsize;
+ struct floor *fl;
+ char* p = buf;
+ const char *pend;
+
+ /* For mailboxes, just do it straight.
+ * Do the Cyrus-compatible thing: all private folders are
+ * subfolders of INBOX. */
+
+ if (qrbuf->QRflags & QR_MAILBOX)
+ {
+ if (strcasecmp(qrbuf->QRname+11, MAILROOM) == 0)
+ {
+ pend = toimap(p, bufend, "INBOX");
+ return pend - buf;
+ }
+ else
+ {
+ p = toimap(p, bufend, "INBOX");
+ if (p < bufend)
+ *p++ = '/';
+ pend = toimap(p, bufend, qrbuf->QRname+11);
+ return pend - buf;
+ }
+ }
+ else
+ {
+ /* Otherwise, prefix the floor name as a "public folders" moniker. */
+
+ fl = CtdlGetCachedFloor(qrbuf->QRfloor);
+ p = toimap(p, bufend, fl->f_name);
+ if (p < bufend)
+ *p++ = '/';
+ pend = toimap(p, bufend, qrbuf->QRname);
+ return pend - buf;
+ }
+}
+
+/*
+ * Convert an inputted folder name to our best guess as to what an equivalent
+ * room name should be.
+ *
+ * If an error occurs, it returns -1. Otherwise...
+ *
+ * The lower eight bits of the return value are the floor number on which the
+ * room most likely resides. The upper eight bits may contain flags,
+ * including IR_MAILBOX if we're dealing with a personal room.
+ *
+ */
+int imap_roomname(char *rbuf, int bufsize, const char *foldername)
+{
+ int levels;
+ char floorname[ROOMNAMELEN*2];
+ char roomname[ROOMNAMELEN];
+ int i;
+ struct floor *fl;
+ int ret = (-1);
+
+ if (foldername == NULL)
+ return(-1);
+
+ /* Unmunge the entire string into the output buffer. */
+
+ fromimap(rbuf, rbuf+bufsize, foldername);
+
+ /* Is this an IMAP inbox? */
+
+ if (strncasecmp(rbuf, "INBOX", 5) == 0)
+ {
+ if (rbuf[5] == 0)
+ {
+ /* It's the system inbox. */
+
+ safestrncpy(rbuf, MAILROOM, bufsize);
+ ret = (0 | IR_MAILBOX);
+ goto exit;
+ }
+ else if (rbuf[5] == FDELIM)
+ {
+ /* It's another personal mail folder. */
+
+ safestrncpy(rbuf, rbuf+6, bufsize);
+ ret = (0 | IR_MAILBOX);
+ goto exit;
+ }
+
+ /* If we get here, the folder just happens to start with INBOX
+ * --- fall through. */
+ }
+
+ /* Is this a multi-level room name? */
+
+ levels = num_tokens(rbuf, FDELIM);
+ if (levels > 1)
+ {
+ long len;
+ /* Extract the main room name. */
+
+ len = extract_token(floorname, rbuf, 0, FDELIM, sizeof floorname);
+ if (len < 0) len = 0;
+ safestrncpy(roomname, &rbuf[len + 1], sizeof(roomname));
+
+ /* Try and find it on any floor. */
+
+ for (i = 0; i < MAXFLOORS; ++i)
+ {
+ fl = CtdlGetCachedFloor(i);
+ if (fl->f_flags & F_INUSE)
+ {
+ if (strcasecmp(floorname, fl->f_name) == 0)
+ {
+ /* Got it! */
+
+ safestrncpy(rbuf, roomname, bufsize);
+ ret = i;
+ goto exit;
+ }
+ }
+ }
+ }
+
+ /* Meh. It's either not a multi-level room name, or else we
+ * couldn't find it.
+ */
+ ret = (0 | IR_MAILBOX);
+
+exit:
+ syslog(LOG_DEBUG, "(That translates to \"%s\")", rbuf);
+ return(ret);
+}
+
+
+/*
+ * Determine whether the supplied string is a valid message set.
+ * If the string contains only numbers, colons, commas, and asterisks,
+ * return 1 for a valid message set. If any other character is found,
+ * return 0.
+ */
+int imap_is_message_set(const char *buf)
+{
+ int i;
+
+ if (buf == NULL)
+ return (0); /* stupidity checks */
+ if (IsEmptyStr(buf))
+ return (0);
+
+ if (!strcasecmp(buf, "ALL"))
+ return (1); /* macro? why? */
+
+ for (i = 0; buf[i]; ++i) { /* now start the scan */
+ if (
+ (!isdigit(buf[i]))
+ && (buf[i] != ':')
+ && (buf[i] != ',')
+ && (buf[i] != '*')
+ )
+ return (0);
+ }
+
+ return (1); /* looks like we're good */
+}
+
+
+/*
+ * imap_match.c, based on wildmat.c from INN
+ * hacked for Citadel/IMAP by Daniel Malament
+ */
+
+/* note: not all return statements use these; don't change them */
+#define WILDMAT_TRUE 1
+#define WILDMAT_FALSE 0
+#define WILDMAT_ABORT -1
+#define WILDMAT_DELIM '/'
+
+/*
+ * Match text and p, return TRUE, FALSE, or ABORT.
+ */
+static int do_imap_match(const char *supplied_text, const char *supplied_p)
+{
+ int matched, i;
+ char lcase_text[SIZ], lcase_p[SIZ];
+ char *text;
+ char *p;
+
+ /* Copy both strings and lowercase them, in order to
+ * make this entire operation case-insensitive.
+ */
+ for (i=0;
+ ((supplied_text[i] != '\0') &&
+ (i < sizeof(lcase_text)));
+ ++i)
+ lcase_text[i] = tolower(supplied_text[i]);
+ lcase_text[i] = '\0';
+
+ for (i=0;
+ ((supplied_p[i] != '\0') &&
+ (i < sizeof(lcase_p)));
+ ++i)
+ lcase_p[i] = tolower(supplied_p[i]);
+ lcase_p[i] = '\0';
+
+ /* Start matching */
+ for (p = lcase_p, text = lcase_text;
+ !IsEmptyStr(p) && !IsEmptyStr(text);
+ text++, p++) {
+ if ((*text == '\0') && (*p != '*') && (*p != '%')) {
+ return WILDMAT_ABORT;
+ }
+ switch (*p) {
+ default:
+ if (*text != *p) {
+ return WILDMAT_FALSE;
+ }
+ continue;
+ case '*':
+star:
+ while (++p, ((*p == '*') || (*p == '%'))) {
+ /* Consecutive stars or %'s act
+ * just like one star.
+ */
+ continue;
+ }
+ if (*p == '\0') {
+ /* Trailing star matches everything. */
+ return WILDMAT_TRUE;
+ }
+ while (*text) {
+ if ((matched = do_imap_match(text++, p))
+ != WILDMAT_FALSE) {
+ return matched;
+ }
+ }
+ return WILDMAT_ABORT;
+ case '%':
+ while (++p, (!IsEmptyStr(p) && ((*p == '*') || (*p == '%'))))
+ {
+ /* Consecutive %'s act just like one, but even
+ * a single star makes the sequence act like
+ * one star, instead.
+ */
+ if (*p == '*') {
+ goto star;
+ }
+ continue;
+ }
+ if (*p == '\0') {
+ /*
+ * Trailing % matches everything
+ * without a delimiter.
+ */
+ while (!IsEmptyStr(text)) {
+ if (*text == WILDMAT_DELIM) {
+ return WILDMAT_FALSE;
+ }
+ text++;
+ }
+ return WILDMAT_TRUE;
+ }
+ while (!IsEmptyStr(text) &&
+ /* make sure text - 1 isn't before lcase_p */
+ ((text == lcase_text) || (*(text - 1) != WILDMAT_DELIM)))
+ {
+ if ((matched = do_imap_match(text++, p))
+ != WILDMAT_FALSE) {
+ return matched;
+ }
+ }
+ return WILDMAT_ABORT;
+ }
+ }
+
+ if ((*text == '\0') && (*p == '\0')) return WILDMAT_TRUE;
+ else return WILDMAT_FALSE;
+}
+
+
+/*
+ * Support function for mailbox pattern name matching in LIST and LSUB
+ * Returns nonzero if the supplied mailbox name matches the supplied pattern.
+ */
+int imap_mailbox_matches_pattern(const char *pattern, char *mailboxname)
+{
+ /* handle just-star case quickly */
+ if ((pattern[0] == '*') && (pattern[1] == '\0')) {
+ return WILDMAT_TRUE;
+ }
+ return (do_imap_match(mailboxname, pattern) == WILDMAT_TRUE);
+}
+
+
+
+/*
+ * Compare an IMAP date string (date only, no time) to the date found in
+ * a Unix timestamp.
+ */
+int imap_datecmp(const char *datestr, time_t msgtime) {
+ char daystr[256];
+ char monthstr[256];
+ char yearstr[256];
+ int i;
+ int day, month, year;
+ int msgday, msgmonth, msgyear;
+ struct tm msgtm;
+
+ char *imap_datecmp_ascmonths[12] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+
+ if (datestr == NULL) return(0);
+
+ /* Expecting a date in the form dd-Mmm-yyyy */
+ extract_token(daystr, datestr, 0, '-', sizeof daystr);
+ extract_token(monthstr, datestr, 1, '-', sizeof monthstr);
+ extract_token(yearstr, datestr, 2, '-', sizeof yearstr);
+
+ day = atoi(daystr);
+ year = atoi(yearstr);
+ month = 0;
+ for (i=0; i<12; ++i) {
+ if (!strcasecmp(monthstr, imap_datecmp_ascmonths[i])) {
+ month = i;
+ }
+ }
+
+ /* Extract day/month/year from message timestamp */
+ localtime_r(&msgtime, &msgtm);
+ msgday = msgtm.tm_mday;
+ msgmonth = msgtm.tm_mon;
+ msgyear = msgtm.tm_year + 1900;
+
+ /* Now start comparing */
+
+ if (year < msgyear) return(+1);
+ if (year > msgyear) return(-1);
+
+ if (month < msgmonth) return(+1);
+ if (month > msgmonth) return(-1);
+
+ if (day < msgday) return(+1);
+ if (day > msgday) return(-1);
+
+ return(0);
+}
+
+
+void IAPrintf(const char *Format, ...)
+{
+ va_list arg_ptr;
+
+ va_start(arg_ptr, Format);
+ StrBufVAppendPrintf(IMAP->Reply, Format, arg_ptr);
+ va_end(arg_ptr);
+}
+
+
+void iaputs(const char *Str, long Len)
+{
+ StrBufAppendBufPlain(IMAP->Reply, Str, Len, 0);
+}
+
+
+void ireply(const char *Msg, long len)
+{
+ citimap *Imap = IMAP;
+
+ StrBufAppendBufPlain(Imap->Reply,
+ CKEY(Imap->Cmd.Params[0]), 0);
+ StrBufAppendBufPlain(Imap->Reply,
+ HKEY(" "), 0);
+ StrBufAppendBufPlain(Imap->Reply,
+ Msg, len, 0);
+
+ StrBufAppendBufPlain(Imap->Reply,
+ HKEY("\r\n"), 0);
+
+}
+
+
+void IReplyPrintf(const char *Format, ...)
+{
+ citimap *Imap = IMAP;
+ va_list arg_ptr;
+
+
+ StrBufAppendBufPlain(Imap->Reply,
+ CKEY(Imap->Cmd.Params[0]), 0);
+
+ StrBufAppendBufPlain(Imap->Reply,
+ HKEY(" "), 0);
+
+ va_start(arg_ptr, Format);
+ StrBufVAppendPrintf(IMAP->Reply, Format, arg_ptr);
+ va_end(arg_ptr);
+
+ StrBufAppendBufPlain(Imap->Reply,
+ HKEY("\r\n"), 0);
+
+}
+
+
+/* Output a string to the IMAP client, either as a literal or quoted.
+ * (We do a literal if it has any double-quotes or backslashes.) */
+void IPutStr(const char *Msg, long Len)
+{
+ int i;
+ int is_literal = 0;
+ citimap *Imap = IMAP;
+
+
+ if ((Msg == NULL) || (Len == 0))
+ { /* yeah, we handle this */
+ StrBufAppendBufPlain(Imap->Reply, HKEY("NIL"), 0);
+ return;
+ }
+
+ for (i = 0; i < Len; ++i) {
+ if ((Msg[i] == '\"') || (Msg[i] == '\\'))
+ is_literal = 1;
+ }
+
+ if (is_literal) {
+ StrBufAppendPrintf(Imap->Reply, "{%ld}\r\n", Len);
+ StrBufAppendBufPlain(Imap->Reply, Msg, Len, 0);
+ } else {
+ StrBufAppendBufPlain(Imap->Reply,
+ HKEY("\""), 0);
+ StrBufAppendBufPlain(Imap->Reply,
+ Msg, Len, 0);
+ StrBufAppendBufPlain(Imap->Reply,
+ HKEY("\""), 0);
+ }
+}
+
+void IUnbuffer (void)
+{
+ citimap *Imap = IMAP;
+
+ cputbuf(Imap->Reply);
+ FlushStrBuf(Imap->Reply);
+}
projects / citadel.git / blobdiff