make IMAP parsing case insensitive
it's easy to overlook, but the spec demands this. we got away with it so far, as everyone just uses UPPERCASE ... for the things we use so far.
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8d9c68f73a
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@ -189,6 +189,8 @@ void *memrchr( const void *s, int c, size_t n );
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size_t strnlen( const char *str, size_t maxlen );
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#endif
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void to_upper( char *str, uint len );
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int starts_with( const char *str, int strl, const char *cmp, uint cmpl );
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int starts_with_upper( const char *str, int strl, const char *cmp, uint cmpl );
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int equals( const char *str, int strl, const char *cmp, uint cmpl );
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@ -924,7 +924,7 @@ parse_imap_list( imap_store_t *ctx, char **sp, parse_list_state_t *sts )
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if (sts->level && *s == ')')
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break;
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cur->len = (uint)(s - p);
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if (equals( p, (int)cur->len, "NIL", 3 ))
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if (equals_upper( p, (int)cur->len, "NIL", 3 ))
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cur->val = NIL;
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else
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cur->val = nfstrndup( p, cur->len );
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@ -1086,12 +1086,13 @@ parse_fetched_flags( list_t *list, uchar *flags, uchar *status )
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}
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if (list->val[0] != '\\' && list->val[0] != '$')
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continue;
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if (equals( list->val, list->len, "\\Recent", 7 )) {
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to_upper( list->val, list->len );
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if (equals( list->val, list->len, "\\RECENT", 7 )) {
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*status |= M_RECENT;
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goto flagok;
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}
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for (uint i = 0; i < as(Flags); i++) {
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if (!strcmp( Flags[i], list->val )) {
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if (!strcasecmp( Flags[i], list->val )) {
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*flags |= 1 << i;
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goto flagok;
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}
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@ -1169,9 +1170,10 @@ parse_fetch_rsp( imap_store_t *ctx, list_t *list )
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error( "IMAP error: bogus item name in FETCH response\n" );
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return LIST_BAD;
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}
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const char *name = tmp->val;
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char *name = tmp->val;
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uint namel = tmp->len;
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tmp = tmp->next;
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to_upper( name, namel );
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if (equals( name, namel, "UID", 3 )) {
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if (!is_atom( tmp ) || (uid = strtoul( tmp->val, &ep, 10 ), *ep)) {
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error( "IMAP error: unable to parse UID\n" );
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@ -1282,6 +1284,7 @@ parse_capability( imap_store_t *ctx, char *cmd )
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ctx->auth_mechs = NULL;
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ctx->caps = 0x80000000;
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while ((arg = next_arg( &cmd, &argl ))) {
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to_upper( arg, argl );
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if (starts_with( arg, argl, "AUTH=", 5 )) {
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add_string_list_n( &ctx->auth_mechs, arg + 5, argl - 5 );
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} else {
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@ -1308,6 +1311,7 @@ parse_response_code( imap_store_t *ctx, imap_cmd_t *cmd, char *s )
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error( "IMAP error: malformed response code\n" );
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return RESP_CANCEL;
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}
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to_upper( arg, argl );
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if (equals( arg, argl, "UIDVALIDITY", 11 )) {
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if (!(arg = next_arg( &s, &argl )) ||
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(ctx->uidvalidity = strtoul( arg, &earg, 10 ), *earg != ']'))
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@ -1374,7 +1378,7 @@ parse_response_code( imap_store_t *ctx, imap_cmd_t *cmd, char *s )
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ret = RESP_CANCEL;
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break;
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}
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if (equals( tmp->val, tmp->len, "\\*", 2 ) || equals( tmp->val, tmp->len, "$Forwarded", 10 )) {
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if (equals( tmp->val, tmp->len, "\\*", 2 ) || equals_upper( tmp->val, tmp->len, "$FORWARDED", 10 )) {
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ctx->has_forwarded = 1;
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break;
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}
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@ -1621,6 +1625,7 @@ imap_socket_read( void *aux )
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break;
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}
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to_upper( arg, argl );
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if (ctx->greeting == GreetingPending && equals( arg, argl, "PREAUTH", 7 )) {
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parse_response_code( ctx, NULL, cmd );
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ctx->greeting = GreetingPreauth;
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@ -1661,6 +1666,7 @@ imap_socket_read( void *aux )
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resp = parse_list( ctx, cmd, parse_namespace_rsp, "NAMESPACE" );
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goto listret;
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} else if ((arg1 = next_arg( &cmd, &argl1 ))) {
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to_upper( arg1, argl1 );
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if (equals( arg1, argl1, "EXISTS", 6 )) {
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ctx->total_msgs = atoi( arg );
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} else if (equals( arg1, argl1, "EXPUNGE", 7 )) {
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@ -1736,13 +1742,14 @@ imap_socket_read( void *aux )
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error( "IMAP error: malformed tagged response\n" );
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break;
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}
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to_upper( arg, argl );
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if (equals( arg, argl, "OK", 2 )) {
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if (cmdp->param.to_trash)
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ctx->trashnc = TrashKnown; /* Can't get NO [TRYCREATE] any more. */
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resp = RESP_OK;
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} else {
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if (equals( arg, argl, "NO", 2 )) {
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if (cmdp->param.create && cmd && starts_with( cmd, -1, "[TRYCREATE]", 11 )) { /* APPEND or UID COPY */
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if (cmdp->param.create && cmd && starts_with_upper( cmd, -1, "[TRYCREATE]", 11 )) { /* APPEND or UID COPY */
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imap_cmd_trycreate_t *cmd2 =
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(imap_cmd_trycreate_t *)new_imap_cmd( sizeof(*cmd2) );
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cmd2->orig_cmd = cmdp;
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@ -284,6 +284,13 @@ strnlen( const char *str, size_t maxlen )
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#endif
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void
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to_upper( char *str, uint len )
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{
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for (uint i = 0; i < len; i++)
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str[i] = toupper( str[i] );
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}
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int
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starts_with( const char *str, int strl, const char *cmp, uint cmpl )
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{
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