From 112dda53dbcd48e6edab183dae94a5b383bdabf2 Mon Sep 17 00:00:00 2001
From: Timo Sirainen <tss@iki.fi>
Date: Sun, 9 May 2004 20:27:34 +0300
Subject: [PATCH] this isn't needed

--HG--
branch : HEAD
---
 src/lib-storage/index/mbox/mbox-sync-header.c | 491 ------------------
 1 file changed, 491 deletions(-)
 delete mode 100644 src/lib-storage/index/mbox/mbox-sync-header.c

diff --git a/src/lib-storage/index/mbox/mbox-sync-header.c b/src/lib-storage/index/mbox/mbox-sync-header.c
deleted file mode 100644
index 6a49671552..0000000000
--- a/src/lib-storage/index/mbox/mbox-sync-header.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/* Copyright (C) 2004 Timo Sirainen */
-
-#include "lib.h"
-#include "buffer.h"
-#include "istream.h"
-#include "str.h"
-#include "write-full.h"
-#include "message-parser.h"
-#include "mail-index.h"
-#include "mbox-sync-private.h"
-
-#include <unistd.h>
-
-struct mbox_flag_type {
-	char chr;
-	enum mail_flags flag;
-};
-
-#define MBOX_NONRECENT MAIL_RECENT /* kludgy */
-
-#define STATUS_FLAGS_MASK (MAIL_SEEN|MBOX_NONRECENT)
-static struct mbox_flag_type status_flags[] = {
-	{ 'R', MAIL_SEEN },
-	{ 'O', MBOX_NONRECENT },
-	{ 0, 0 }
-};
-
-#define XSTATUS_FLAGS_MASK (MAIL_ANSWERED|MAIL_FLAGGED|MAIL_DRAFT|MAIL_DELETED)
-static struct mbox_flag_type xstatus_flags[] = {
-	{ 'A', MAIL_ANSWERED },
-	{ 'F', MAIL_FLAGGED },
-	{ 'T', MAIL_DRAFT },
-	{ 'D', MAIL_DELETED },
-	{ 0, 0 }
-};
-
-struct header_func {
-	const char *header;
-	int (*func)(struct mbox_sync_mail_context *ctx,
-		    struct message_header_line *hdr);
-};
-
-static enum mail_flags mbox_flag_find(struct mbox_flag_type *flags, char chr)
-{
-	int i;
-
-	for (i = 0; flags[i].chr != 0; i++) {
-		if (flags[i].chr == chr)
-			return flags[i].flag;
-	}
-
-	return 0;
-}
-
-static void status_flags_append(struct mbox_sync_mail_context *ctx,
-				struct mbox_flag_type *flags_list)
-{
-	int i;
-
-	for (i = 0; flags_list[i].chr != 0; i++) {
-		if ((ctx->mail_flags & flags_list[i].flag) != 0) {
-			str_append_c(ctx->header, flags_list[i].chr);
-			ctx->mail_flags &= ~flags_list[i].flag;
-		}
-	}
-}
-
-static int parse_status_flags(struct mbox_sync_mail_context *ctx,
-			      struct message_header_line *hdr,
-			      struct mbox_flag_type *flags_list)
-{
-	size_t i, start, end;
-	int j;
-        enum mail_flags flags, flags_mask;
-
-	flags = 0;
-	for (i = 0; i < hdr->full_value_len; i++)
-		flags |= mbox_flag_find(flags_list, hdr->full_value[i]);
-
-	flags_mask = 0;
-	for (j = 0; flags_list[j].chr != 0; j++)
-		flags_mask |= flags_list[j].flag;
-
-	/* see if anything changed */
-	if (flags == (ctx->mail_flags & flags_mask)) {
-		ctx->mail_flags &= ~flags_mask;
-		return FALSE;
-	}
-
-	start = str_len(ctx->header);
-	str_append(ctx->header, hdr->name);
-	str_append(ctx->header, ": ");
-	end = str_len(ctx->header);
-
-	status_flags_append(ctx, flags_list);
-
-	for (i = 0; i < hdr->full_value_len; i++) {
-		switch (hdr->full_value[i]) {
-		case ' ':
-		case '\t':
-		case '\r':
-		case '\n':
-			break;
-		default:
-			if (mbox_flag_find(flags_list, hdr->full_value[i]) != 0)
-				break;
-
-			/* unknown, keep it */
-			str_append_c(ctx->header, hdr->full_value[i]);
-			break;
-		}
-	}
-
-	if (str_len(ctx->header) != end)
-		str_append_c(ctx->header, '\n');
-	else
-		str_truncate(ctx->header, start);
-	return TRUE;
-}
-
-static int parse_status(struct mbox_sync_mail_context *ctx,
-			struct message_header_line *hdr)
-{
-	return parse_status_flags(ctx, hdr, status_flags);
-}
-
-static int parse_x_status(struct mbox_sync_mail_context *ctx,
-			  struct message_header_line *hdr)
-{
-	return parse_status_flags(ctx, hdr, xstatus_flags);
-}
-
-static int parse_x_imap_base(struct mbox_sync_mail_context *ctx,
-			     struct message_header_line *hdr)
-{
-	ctx->ximapbase_pos = buffer_get_used_size(ctx->header);
-	// FIXME: check it
-	//ctx->extra_space += 1;
-	return FALSE;
-}
-
-static int parse_x_keywords(struct mbox_sync_mail_context *ctx,
-			    struct message_header_line *hdr)
-{
-	ctx->xkeywords_pos = buffer_get_used_size(ctx->header);
-	// FIXME: update it
-        //ctx->extra_space += 1;
-	return FALSE;
-}
-
-static int parse_content_length(struct mbox_sync_mail_context *ctx,
-				struct message_header_line *hdr)
-{
-	uoff_t value = 0;
-	size_t i;
-
-	if (ctx->content_length != (uoff_t)-1) {
-		/* duplicate */
-		return TRUE;
-	}
-
-	for (i = 0; i < hdr->full_value_len; i++) {
-		if (hdr->full_value[i] < '0' || hdr->full_value[i] > '9')
-			break;
-		value = value*10 + (hdr->full_value[i] - '0');
-	}
-
-	for (; i < hdr->full_value_len; i++) {
-		if (hdr->full_value[i] != ' ' && hdr->full_value[i] != '\t') {
-			/* broken value */
-			return TRUE;
-		}
-	}
-
-	ctx->content_length = value;
-	return FALSE;
-}
-
-static int parse_x_uid(struct mbox_sync_mail_context *ctx,
-		       struct message_header_line *hdr)
-{
-	uint32_t value = 0;
-	size_t i, extra_space = 0;
-
-	if (ctx->uid != 0) {
-		/* duplicate */
-		return TRUE;
-	}
-
-	for (i = 0; i < hdr->full_value_len; i++) {
-		if (hdr->full_value[i] < '0' || hdr->full_value[i] > '9')
-			break;
-		value = value*10 + (hdr->full_value[i] - '0');
-	}
-
-	for (; i < hdr->full_value_len; i++) {
-		if (hdr->full_value[i] != ' ' && hdr->full_value[i] != '\t') {
-			/* broken value */
-			return TRUE;
-		}
-		extra_space++;
-	}
-
-	if (value <= ctx->parent->prev_msg_uid) {
-		/* broken - UIDs must be growing */
-		return TRUE;
-	}
-
-	ctx->uid = value;
-	ctx->extra_space += extra_space;
-	ctx->xuid_pos = buffer_get_used_size(ctx->header);
-	return FALSE;
-}
-
-static struct header_func header_funcs[] = {
-	{ "Content-Length", parse_content_length },
-	{ "Status", parse_status },
-	{ "X-IMAPbase", parse_x_imap_base },
-	{ "X-Keywords", parse_x_keywords },
-	{ "X-Status", parse_x_status },
-	{ "X-UID", parse_x_uid },
-	{ NULL, NULL }
-};
-
-static struct header_func *header_func_find(const char *header)
-{
-	int i;
-
-	for (i = 0; header_funcs[i].header != NULL; i++) {
-		if (strcasecmp(header_funcs[i].header, header) == 0)
-			return &header_funcs[i];
-	}
-	return NULL;
-}
-
-void mbox_sync_mail_parse_headers(struct mbox_sync_mail_context *ctx)
-{
-	struct message_header_parser_ctx *hdr_ctx;
-	struct message_header_line *hdr;
-        struct header_func *func;
-
-        ctx->header_first_change = (size_t)-1;
-	ctx->header_last_change = (size_t)-1;
-
-	ctx->xuid_pos = (size_t)-1;
-	ctx->xkeywords_pos = (size_t)-1;
-
-	ctx->content_length = (uoff_t)-1;
-	str_truncate(ctx->header, 0);
-
-	hdr_ctx = message_parse_header_init(ctx->parent->input, NULL);
-	while ((hdr = message_parse_header_next(hdr_ctx)) != NULL) {
-		if (hdr->eoh) {
-			ctx->have_eoh = 1;
-			break;
-		}
-
-		func = header_func_find(hdr->name);
-		if (func != NULL) {
-			if (hdr->continues) {
-				hdr->use_full_value = TRUE;
-				continue;
-			}
-			if (func->func(ctx, hdr)) {
-				/* we modified this header */
-				if (ctx->header_first_change == (size_t)-1) {
-					ctx->header_first_change =
-					      buffer_get_used_size(ctx->header);
-				}
-				ctx->header_last_change = (size_t)-1;
-			} else {
-				func = NULL;
-			}
-		}
-
-		if (func == NULL) {
-			if (ctx->header_last_change == (size_t)-1) {
-				/* we may be able to stop rewriting here */
-				ctx->header_last_change =
-					buffer_get_used_size(ctx->header);
-			}
-			if (!hdr->continued) {
-				str_append(ctx->header, hdr->name);
-				str_append(ctx->header, ": ");
-			}
-			buffer_append(ctx->header, hdr->full_value,
-				      hdr->full_value_len);
-			if (!hdr->no_newline)
-				str_append_c(ctx->header, '\n');
-		}
-	}
-	message_parse_header_deinit(hdr_ctx);
-}
-
-void mbox_sync_mail_add_missing_headers(struct mbox_sync_mail_context *ctx)
-{
-	size_t old_hdr_size, new_hdr_size, size;
-	const char *str;
-	void *p;
-	int changed;
-
-	old_hdr_size = ctx->body_offset - ctx->hdr_offset;
-	new_hdr_size = str_len(ctx->header) + ctx->have_eoh;
-
-	changed = FALSE;
-	if (ctx->uid == 0) {
-		ctx->xuid_pos = buffer_get_used_size(ctx->header);
-		str_printfa(ctx->header, "X-UID: %u\n",
-			    ctx->parent->next_uid++);
-	}
-
-	if ((ctx->mail_flags & STATUS_FLAGS_MASK) != 0) {
-		str_append(ctx->header, "Status: ");
-		status_flags_append(ctx, status_flags);
-		str_append_c(ctx->header, '\n');
-	}
-
-	if ((ctx->mail_flags & XSTATUS_FLAGS_MASK) != 0) {
-		str_append(ctx->header, "X-Status: ");
-		status_flags_append(ctx, xstatus_flags);
-		str_append_c(ctx->header, '\n');
-	}
-
-	if (ctx->seq == 1 && ctx->base_uidvalidity == 0) {
-		ctx->ximapbase_pos = buffer_get_used_size(ctx->header);
-		str_printfa(ctx->header, "X-IMAPbase: %u %u",
-			    ctx->parent->hdr->uid_validity,
-			    ctx->parent->next_uid);
-
-		/* if we can get away by adding only a little space, do it.
-		   otherwise give a lot of extra */
-		size = str_len(ctx->header) + ctx->have_eoh + 1 -
-			ctx->extra_space/2;
-		if (size <= old_hdr_size)
-			size = old_hdr_size - size;
-		else
-			size = 256;
-
-		p = buffer_append_space_unsafe(ctx->header, size);
-		memset(p, ' ', size);
-		str_append_c(ctx->header, '\n');
-	}
-
-	/* write Content-Length if we have space */
-	if (ctx->content_length == (uoff_t)-1) {
-		str = t_strdup_printf("Content-Length: %"PRIuUOFF_T"\n",
-				      ctx->body_size);
-		size = buffer_get_used_size(ctx->header) + ctx->have_eoh -
-			ctx->extra_space;
-		if (size > old_hdr_size || size + strlen(str) <= old_hdr_size)
-			str_append(ctx->header, str);
-	}
-
-	/* Create X-Keywords header if it's not there and we have space */
-	if (ctx->xkeywords_pos == (size_t)-1) {
-		size = buffer_get_used_size(ctx->header) + ctx->have_eoh -
-			ctx->extra_space;
-		if (size > old_hdr_size ||
-		    size + sizeof("X-Keywords: ") <= old_hdr_size) {
-			ctx->xkeywords_pos = buffer_get_used_size(ctx->header);
-			str_append(ctx->header, "X-Keywords: \n");
-		}
-	}
-
-	if (buffer_get_used_size(ctx->header) != new_hdr_size) {
-		if (ctx->header_first_change == (size_t)-1)
-			ctx->header_first_change = new_hdr_size;
-		ctx->header_last_change = (size_t)-1;
-		new_hdr_size = buffer_get_used_size(ctx->header) +
-			ctx->have_eoh;
-	}
-
-	if (ctx->header_first_change == (size_t)-1) {
-		/* no headers had to be modified */
-		return;
-	}
-
-	if (ctx->have_eoh)
-		str_append_c(ctx->header, '\n');
-}
-
-static void mbox_sync_headers_add_space(struct mbox_sync_mail_context *ctx,
-					size_t size)
-{
-	size_t data_size, pos;
-	const unsigned char *data;
-	void *p;
-
-	/* Append at the end of X-Keywords header,
-	   or X-UID if it doesn't exist */
-	pos = ctx->xkeywords_pos != (size_t)-1 ?
-		ctx->xkeywords_pos : ctx->xuid_pos;
-
-	data = buffer_get_data(ctx->header, &data_size);
-	while (pos < data_size && data[pos] != '\n')
-		pos++;
-
-	buffer_copy(ctx->header, pos + size,
-		    ctx->header, pos, (size_t)-1);
-	p = buffer_get_space_unsafe(ctx->header, pos, size);
-	memset(p, ' ', size);
-	ctx->extra_space += size;
-
-	if (ctx->header_first_change > pos)
-		ctx->header_first_change = pos;
-	ctx->header_last_change = (size_t)-1;
-}
-
-static void mbox_sync_header_remove_space(struct mbox_sync_mail_context *ctx,
-					  size_t pos, size_t *size)
-{
-	const unsigned char *data;
-	size_t data_size, end, nonspace;
-
-	/* find the end of the lwsp */
-	nonspace = pos;
-	data = str_data(ctx->header);
-	data_size = str_len(ctx->header);
-	for (end = pos; end < data_size; end++) {
-		if (data[end] == '\n') {
-			if (end+1 == data_size || !IS_LWSP(data[end+1]))
-				break;
-		} else {
-			if (!IS_LWSP(data[end]))
-				nonspace = end;
-		}
-	}
-
-	/* and remove what we can */
-	nonspace++;
-	if (end-nonspace < *size) {
-		str_delete(ctx->header, nonspace, end-nonspace);
-		*size -= end-nonspace;
-	} else {
-		str_delete(ctx->header, nonspace, *size);
-		*size = 0;
-	}
-}
-
-static void mbox_sync_headers_remove_space(struct mbox_sync_mail_context *ctx,
-					   size_t size)
-{
-	if (ctx->xkeywords_pos != (size_t)-1)
-		mbox_sync_header_remove_space(ctx, ctx->xkeywords_pos, &size);
-	if (ctx->xuid_pos != (size_t)-1 && size > 0)
-		mbox_sync_header_remove_space(ctx, ctx->xuid_pos, &size);
-	if (ctx->ximapbase_pos != (size_t)-1 && size > 0)
-		mbox_sync_header_remove_space(ctx, ctx->ximapbase_pos, &size);
-	i_assert(size == 0);
-}
-
-int mbox_sync_try_rewrite_headers(struct mbox_sync_mail_context *ctx,
-				  uoff_t *missing_space_r)
-{
-	size_t old_hdr_size, new_hdr_size;
-	const unsigned char *data;
-
-	old_hdr_size = ctx->body_offset - ctx->hdr_offset;
-	new_hdr_size = str_len(ctx->header);
-
-	/* do we have enough space? */
-	if (new_hdr_size < old_hdr_size)
-		mbox_sync_headers_add_space(ctx, old_hdr_size - new_hdr_size);
-	else if (new_hdr_size > old_hdr_size) {
-		if (ctx->extra_space < new_hdr_size - old_hdr_size) {
-			*missing_space_r = new_hdr_size - old_hdr_size -
-				ctx->extra_space;
-			return 0;
-		}
-
-		ctx->extra_space -= new_hdr_size - old_hdr_size;
-		mbox_sync_headers_remove_space(ctx, new_hdr_size -
-					       old_hdr_size);
-	}
-
-	i_assert(ctx->header_first_change != (size_t)-1);
-
-	if (ctx->header_last_change != (size_t)-1)
-		str_truncate(ctx->header, ctx->header_last_change);
-
-	data = str_data(ctx->header);
-        new_hdr_size = str_len(ctx->header);
-	if (pwrite_full(ctx->parent->fd, data + ctx->header_first_change,
-			new_hdr_size,
-			ctx->hdr_offset + ctx->header_first_change) < 0) {
-		// FIXME: error handling
-		return -1;
-	}
-	*missing_space_r = 0;
-	return 0;
-}
-- 
2.47.3