From e3b89230f065c48c84b48c88edb6eb088374c487 Mon Sep 17 00:00:00 2001
From: zautrix <zautrix>
Date: Sat, 03 Jul 2004 16:33:12 +0000
Subject: Initial revision

---
(limited to 'kmicromail/libetpan/generic/mime_message_driver.c')

diff --git a/kmicromail/libetpan/generic/mime_message_driver.c b/kmicromail/libetpan/generic/mime_message_driver.c
new file mode 100644
index 0000000..273875e
--- a/dev/null
+++ b/kmicromail/libetpan/generic/mime_message_driver.c
@@ -0,0 +1,689 @@
+/*
+ * libEtPan! -- a mail stuff library
+ *
+ * Copyright (C) 2001 - 2003 - DINH Viet Hoa
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the libEtPan! project nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * $Id$
+ */
+
+#include "mime_message_driver.h"
+
+#include "libetpan-config.h"
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "mailmessage.h"
+#include "mailmessage_tools.h"
+#include "maildriver_tools.h"
+
+static FILE * get_mime_tmp_file(mailmessage * msg,
+    char * filename, size_t size)
+{
+  int fd;
+  mode_t old_mask;
+  FILE * f;
+  
+  if (msg->msg_data == NULL)
+    return NULL;
+  
+  snprintf(filename, size, "%s/libetpan-mime-XXXXXX",
+      (char *) msg->msg_data);
+  
+  old_mask = umask(0077);
+  fd = mkstemp(filename);
+  umask(old_mask);
+  if (fd == -1)
+    return NULL;
+  
+  f = fdopen(fd, "r+");
+  if (f == NULL) {
+    close(fd);
+    unlink(filename);
+  }
+  
+  return f;
+}
+
+int mime_message_set_tmpdir(mailmessage * msg, char * tmpdir)
+{
+  if (msg->msg_data != NULL)
+    free(msg->msg_data);
+  
+  msg->msg_data = strdup(tmpdir);
+  if (msg->msg_data == NULL)
+    return MAIL_ERROR_MEMORY;
+  
+  return MAIL_NO_ERROR;
+}
+
+void mime_message_detach_mime(mailmessage * msg)
+{
+  msg->msg_mime = NULL;
+}
+
+mailmessage * mime_message_init(struct mailmime * mime)
+{
+  mailmessage * msg;
+  int r;
+  
+  msg = mailmessage_new();
+  if (msg == NULL)
+    goto err;
+
+  r = mailmessage_init(msg, NULL, mime_message_driver, 0, 0);
+  if (r != MAIL_NO_ERROR)
+    goto free;
+  
+  if (mime != NULL) {
+    mailmime_free(msg->msg_mime);
+    msg->msg_mime = mime;
+  }
+  
+  return msg;
+  
+ free:
+  mailmessage_free(msg);
+ err:
+  return NULL;
+}
+
+static int initialize(mailmessage * msg)
+{
+  struct mailmime * mime;
+  int res;
+  
+  mime = mailmime_new_message_data(NULL);
+  if (mime == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto err;
+  }
+  
+  msg->msg_mime = mime;
+  
+  return MAIL_NO_ERROR;
+  
+ err:
+  return res;
+}
+
+static void uninitialize(mailmessage * msg)
+{
+  /* tmp dir name */
+  if (msg->msg_data != NULL)
+    free(msg->msg_data);
+  
+  if (msg->msg_mime != NULL)
+    mailmime_free(msg->msg_mime);
+  msg->msg_mime = NULL;
+}
+
+static void flush(mailmessage * msg)
+{
+  /* do nothing */
+}
+
+static void check(mailmessage * msg)
+{
+  /* do nothing */
+}
+
+static void fetch_result_free(mailmessage * msg_info, char * content)
+{
+  mmap_string_unref(content);
+}
+
+static int file_to_mmapstr(FILE * f,
+    char ** result, size_t * result_len)
+{
+  int fd;
+  char * data;
+  struct stat buf;
+  MMAPString * mmapstr;
+  int res;
+  int r;
+  
+  fd = fileno(f);
+  if (fd == -1) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+
+  fflush(f);
+  r = fstat(fd, &buf);
+  if (r == -1) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+  
+  data = mmap(NULL, buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+  if (data == MAP_FAILED) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+  
+  mmapstr = mmap_string_new_len(data, buf.st_size);
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    
+    goto unmap;
+  }
+  
+  munmap(data, buf.st_size);
+  
+  r = mmap_string_ref(mmapstr);
+  if (r != 0) {
+    res = MAIL_ERROR_MEMORY;
+    
+    goto err;
+  }
+  
+  * result = mmapstr->str;
+  * result_len = mmapstr->len;
+
+  return MAIL_NO_ERROR;
+
+ unmap:
+  munmap(data, buf.st_size);
+ err:
+  return res;
+}
+
+
+static int file_body_to_mmapstr(FILE * f,
+    char ** result, size_t * result_len)
+{
+  int fd;
+  char * data;
+  struct stat buf;
+  MMAPString * mmapstr;
+  size_t cur_token;
+  int res;
+  int r;
+  
+  fd = fileno(f);
+  if (fd == -1) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+  
+  fflush(f);
+  r = fstat(fd, &buf);
+  if (r == -1) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+  
+  data = mmap(NULL, buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+  if (data == MAP_FAILED) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+
+  cur_token = 0;
+  
+  /* skip header */
+  
+  while (1) {
+    r = mailimf_ignore_field_parse(data,
+        buf.st_size, &cur_token);
+    if (r == MAILIMF_NO_ERROR) {
+      /* do nothing */
+    }
+    else
+      break;
+  }
+  
+  r = mailimf_crlf_parse(data, buf.st_size, &cur_token);
+  if ((r != MAILIMF_NO_ERROR) && (r != MAILIMF_ERROR_PARSE)) {
+    res = maildriver_imf_error_to_mail_error(r);
+    goto unmap;
+  }
+  
+  mmapstr = mmap_string_new_len(data + cur_token, buf.st_size - cur_token);
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    
+    goto unmap;
+  }
+  
+  munmap(data, buf.st_size);
+  
+  r = mmap_string_ref(mmapstr);
+  if (r != 0) {
+    res = MAIL_ERROR_MEMORY;
+    
+    goto err;
+  }
+  
+  * result = mmapstr->str;
+  * result_len = mmapstr->len;
+
+  return MAIL_NO_ERROR;
+
+ unmap:
+  munmap(data, buf.st_size);
+ err:
+  return res;
+}
+
+static int file_body_body_to_mmapstr(FILE * f,
+    char ** result, size_t * result_len)
+{
+  int fd;
+  char * data;
+  struct stat buf;
+  MMAPString * mmapstr;
+  size_t cur_token;
+  int res;
+  int r;
+  
+  fd = fileno(f);
+  if (fd == -1) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+  
+  fflush(f);
+  r = fstat(fd, &buf);
+  if (r == -1) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+  
+  data = mmap(NULL, buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+  if (data == MAP_FAILED) {
+    res = MAIL_ERROR_FILE;
+    
+    goto err;
+  }
+
+  cur_token = 0;
+  
+  /* skip header */
+  
+  /* MIME header */
+  
+  while (1) {
+    r = mailimf_ignore_field_parse(data,
+        buf.st_size, &cur_token);
+    if (r == MAILIMF_NO_ERROR) {
+      /* do nothing */
+    }
+    else
+      break;
+  }
+  
+  r = mailimf_crlf_parse(data, buf.st_size, &cur_token);
+  if ((r != MAILIMF_NO_ERROR) && (r != MAILIMF_ERROR_PARSE)) {
+    res = maildriver_imf_error_to_mail_error(r);
+    goto unmap;
+  }
+  
+  /* headers */
+  
+  while (1) {
+    r = mailimf_ignore_field_parse(data,
+        buf.st_size, &cur_token);
+    if (r == MAILIMF_NO_ERROR) {
+      /* do nothing */
+    }
+    else
+      break;
+  }
+  
+  r = mailimf_crlf_parse(data, buf.st_size, &cur_token);
+  if ((r != MAILIMF_NO_ERROR) && (r != MAILIMF_ERROR_PARSE)) {
+    res = maildriver_imf_error_to_mail_error(r);
+    goto unmap;
+  }
+  
+  mmapstr = mmap_string_new_len(data + cur_token, buf.st_size - cur_token);
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    
+    goto unmap;
+  }
+  
+  munmap(data, buf.st_size);
+  
+  r = mmap_string_ref(mmapstr);
+  if (r != 0) {
+    res = MAIL_ERROR_MEMORY;
+    
+    goto err;
+  }
+  
+  * result = mmapstr->str;
+  * result_len = mmapstr->len;
+
+  return MAIL_NO_ERROR;
+
+ unmap:
+  munmap(data, buf.st_size);
+ err:
+  return res;
+}
+
+
+
+static int fetch_section(mailmessage * msg_info,
+    struct mailmime * mime,
+    char ** result, size_t * result_len)
+{
+  int r;
+  FILE * f;
+  int res;
+  int col;
+  char filename[PATH_MAX];
+
+  if (msg_info->msg_mime == NULL)
+    return MAIL_ERROR_INVAL;
+  
+  f = get_mime_tmp_file(msg_info, filename, sizeof(filename));
+  if (f == NULL) {
+    res = MAIL_ERROR_FILE;
+    goto err;
+  }
+  
+  col = 0;
+  r = mailmime_write(f, &col, mime);
+  if (r != MAILIMF_NO_ERROR) {
+    res = maildriver_imf_error_to_mail_error(r);
+    goto close;
+  }
+  
+  if (mime->mm_parent == NULL)
+    r = file_to_mmapstr(f, result, result_len);
+  else
+    r = file_body_to_mmapstr(f, result, result_len);
+  
+  if (r != MAIL_NO_ERROR) {
+    res = r;
+    goto close;
+  }
+  
+  fclose(f);
+  unlink(filename);
+  
+  return MAIL_NO_ERROR;
+
+ close:
+  fclose(f);
+  unlink(filename);
+ err:
+  return res;
+}
+
+
+static int fetch_section_header(mailmessage * msg_info,
+    struct mailmime * mime,
+    char ** result, size_t * result_len)
+{
+  int r;
+  FILE * f;
+  int res;
+  int col;
+  char filename[PATH_MAX];
+
+  if (msg_info->msg_mime == NULL)
+    return MAIL_ERROR_INVAL;
+  
+  f = get_mime_tmp_file(msg_info, filename, sizeof(filename));
+  if (f == NULL) {
+    res = MAIL_ERROR_FILE;
+    goto err;
+  }
+  
+  col = 0;
+  if (mime->mm_type == MAILMIME_MESSAGE) {
+    if (mime->mm_data.mm_message.mm_fields != NULL) {
+      r = mailimf_fields_write(f, &col, mime->mm_data.mm_message.mm_fields);
+      if (r != MAILIMF_NO_ERROR) {
+        res = maildriver_imf_error_to_mail_error(r);
+        goto close;
+      }
+      mailimf_string_write(f, &col, "\r\n", 2);
+    }
+  }
+  
+  r = file_to_mmapstr(f, result, result_len);
+  if (r != MAIL_NO_ERROR) {
+    res = r;
+    goto close;
+  }
+  
+  fclose(f);
+  unlink(filename);
+  
+  return MAIL_NO_ERROR;
+
+ close:
+  fclose(f);
+  unlink(filename);
+ err:
+  return res;
+}
+
+
+static int fetch_section_mime(mailmessage * msg_info,
+    struct mailmime * mime,
+    char ** result, size_t * result_len)
+{
+  int r;
+  FILE * f;
+  int res;
+  int col;
+  char filename[PATH_MAX];
+
+  if (msg_info->msg_mime == NULL)
+    return MAIL_ERROR_INVAL;
+  
+  f = get_mime_tmp_file(msg_info, filename, sizeof(filename));
+  if (f == NULL) {
+    res = MAIL_ERROR_FILE;
+    goto err;
+  }
+  
+  col = 0;
+  if (mime->mm_content_type != NULL) {
+    r = mailmime_content_write(f, &col, mime->mm_content_type);
+    if (r != MAILIMF_NO_ERROR) {
+      res = maildriver_imf_error_to_mail_error(r);
+      goto close;
+    }
+  }
+  if (mime->mm_mime_fields != NULL) {
+    r = mailmime_fields_write(f, &col, mime->mm_mime_fields);
+    if (r != MAILIMF_NO_ERROR) {
+      res = maildriver_imf_error_to_mail_error(r);
+      goto close;
+    }
+  }
+  mailimf_string_write(f, &col, "\r\n", 2);
+  
+  r = file_to_mmapstr(f, result, result_len);
+  if (r != MAIL_NO_ERROR) {
+    res = r;
+    goto close;
+  }
+  
+  fclose(f);
+  unlink(filename);
+
+  return MAIL_NO_ERROR;
+
+ close:
+  fclose(f);
+  unlink(filename);
+ err:
+  return res;
+}
+
+
+
+static int fetch_section_body(mailmessage * msg_info,
+    struct mailmime * mime,
+    char ** result, size_t * result_len)
+{
+  int r;
+  FILE * f;
+  int res;
+  int col;
+  char filename[PATH_MAX];
+
+  if (msg_info->msg_mime == NULL)
+    return MAIL_ERROR_INVAL;
+  
+  f = get_mime_tmp_file(msg_info, filename, sizeof(filename));
+  if (f == NULL) {
+    res = MAIL_ERROR_FILE;
+    goto err;
+  }
+  
+  col = 0;
+  if (mime->mm_mime_fields != NULL) {
+    r = mailmime_write(f, &col, mime);
+    if (r != MAILIMF_NO_ERROR) {
+      res = maildriver_imf_error_to_mail_error(r);
+      goto close;
+    }
+  }
+  
+  if (mime->mm_type == MAILMIME_MESSAGE)
+    r = file_body_body_to_mmapstr(f, result, result_len);
+  else
+    r = file_body_to_mmapstr(f, result, result_len);
+  
+  if (r != MAIL_NO_ERROR) {
+    res = r;
+    goto close;
+  }
+  
+  fclose(f);
+  unlink(filename);
+  
+  return MAIL_NO_ERROR;
+  
+ close:
+  fclose(f);
+  unlink(filename);
+ err:
+  return res;
+}
+
+
+static int get_bodystructure(mailmessage * msg_info,
+    struct mailmime ** result)
+{
+  if (msg_info->msg_mime == NULL)
+    return MAIL_ERROR_INVAL;
+  
+  * result = msg_info->msg_mime;
+  
+  return MAIL_NO_ERROR;
+}
+
+
+static int fetch(mailmessage * msg_info,
+    char ** result, size_t * result_len)
+{
+  return fetch_section(msg_info, msg_info->msg_mime, result, result_len);
+}
+
+static int fetch_header(mailmessage * msg_info,
+    char ** result, size_t * result_len)
+{
+  return fetch_section_header(msg_info,
+      msg_info->msg_mime, result, result_len);
+}
+
+static int fetch_body(mailmessage * msg_info,
+    char ** result, size_t * result_len)
+{
+  return fetch_section_body(msg_info, msg_info->msg_mime, result, result_len);
+}
+
+
+static int fetch_size(mailmessage * msg_info,
+    size_t * result)
+{
+  char * msg;
+  int r;
+
+  r = fetch(msg_info, &msg, result);
+  if (r != MAIL_NO_ERROR) {
+    return r;
+  }
+  
+  fetch_result_free(msg_info, msg);
+
+  return MAIL_NO_ERROR;
+}
+
+
+static mailmessage_driver local_mime_message_driver = {
+  .msg_name = "mime",
+  
+  .msg_initialize = initialize,
+  .msg_uninitialize = uninitialize,
+  
+  .msg_flush = flush,
+  .msg_check = check,
+
+  .msg_fetch_result_free = fetch_result_free,
+  
+  .msg_fetch = fetch,
+  .msg_fetch_header = fetch_header,
+  .msg_fetch_body = fetch_body,
+  .msg_fetch_size = fetch_size,
+  .msg_get_bodystructure = get_bodystructure,
+  .msg_fetch_section = fetch_section,
+  .msg_fetch_section_header = fetch_section_header,
+  .msg_fetch_section_mime = fetch_section_mime,
+  .msg_fetch_section_body = fetch_section_body,
+  .msg_fetch_envelope = mailmessage_generic_fetch_envelope,
+
+  .msg_get_flags = NULL,
+};
+
+mailmessage_driver * mime_message_driver = &local_mime_message_driver;
--
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