Diffstat (limited to 'kmicromail/libetpan/tools/mailstream.c') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | kmicromail/libetpan/tools/mailstream.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kmicromail/libetpan/tools/mailstream.c b/kmicromail/libetpan/tools/mailstream.c index 0f55e67..6d1a8cc 100644 --- a/kmicromail/libetpan/tools/mailstream.c +++ b/kmicromail/libetpan/tools/mailstream.c @@ -1,394 +1,394 @@ /* * libEtPan! -- a mail stuff library * * Copyright (C) 2001, 2002 - 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 "mailstream.h" #include "maillock.h" #include <string.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> -#define DEFAULT_NETWORK_TIMEOUT 300 + #ifdef LIBETPAN_MAILSTREAM_DEBUG #define STREAM_DEBUG #include <stdio.h> #define LOG_FILE "libetpan-stream-debug.log" int mailstream_debug = 0; #define STREAM_LOG_BUF(buf, size) \ if (mailstream_debug) { \ FILE * f; \ mode_t old_mask; \ \ old_mask = umask(0077); \ f = fopen(LOG_FILE, "a"); \ umask(old_mask); \ if (f != NULL) { \ maillock_write_lock(LOG_FILE, fileno(f)); \ fwrite((buf), 1, (size), f); \ maillock_write_unlock(LOG_FILE, fileno(f)); \ fclose(f); \ } \ } #define STREAM_LOG(str) \ if (mailstream_debug) { \ FILE * f; \ mode_t old_mask; \ \ old_mask = umask(0077); \ f = fopen(LOG_FILE, "a"); \ umask(old_mask); \ if (f != NULL) { \ maillock_write_lock(LOG_FILE, fileno(f)); \ fputs((str), f); \ maillock_write_unlock(LOG_FILE, fileno(f)); \ fclose(f); \ } \ } #else #define STREAM_LOG_BUF(buf, size) do { } while (0) #define STREAM_LOG(buf) do { } while (0) #endif mailstream * mailstream_new(mailstream_low * low, size_t buffer_size) { mailstream * s; s = malloc(sizeof(* s)); if (s == NULL) goto err; s->read_buffer = malloc(buffer_size); if (s->read_buffer == NULL) goto free_s; s->read_buffer_len = 0; s->write_buffer = malloc(buffer_size); if (s->write_buffer == NULL) goto free_read_buffer; s->write_buffer_len = 0; s->buffer_max_size = buffer_size; s->low = low; return s; free_read_buffer: free(s->read_buffer); free_s: free(s); err: return NULL; } static size_t write_to_internal_buffer(mailstream * s, const void * buf, size_t count) { memcpy(s->write_buffer + s->write_buffer_len, buf, count); s->write_buffer_len += count; return count; } static size_t write_direct(mailstream * s, const void * buf, size_t count) { size_t left; const char * cur_buf; ssize_t written; cur_buf = buf; left = count; while (left > 0) { written = mailstream_low_write(s->low, cur_buf, left); if (written == -1) { if (count == left) return -1; else return count - left; } cur_buf += written; left -= written; } return count; } ssize_t mailstream_write(mailstream * s, const void * buf, size_t count) { int r; if (s == NULL) return -1; if (count + s->write_buffer_len > s->buffer_max_size) { r = mailstream_flush(s); if (r == -1) return -1; if (count > s->buffer_max_size) return write_direct(s, buf, count); } #ifdef STREAM_DEBUG STREAM_LOG(">>>>>>> send >>>>>>\n"); STREAM_LOG_BUF(buf, count); STREAM_LOG("\n"); STREAM_LOG(">>>>>>> end send >>>>>>\n"); #endif return write_to_internal_buffer(s, buf, count); } int mailstream_flush(mailstream * s) { char * cur_buf; size_t left; ssize_t written; if (s == NULL) return -1; cur_buf = s->write_buffer; left = s->write_buffer_len; while (left > 0) { written = mailstream_low_write(s->low, cur_buf, left); if (written == -1) goto move_buffer; cur_buf += written; left -= written; } s->write_buffer_len = 0; return 0; move_buffer: memmove(s->write_buffer, cur_buf, left); s->write_buffer_len = left; return -1; } static ssize_t read_from_internal_buffer(mailstream * s, void * buf, size_t count) { if (count >= s->read_buffer_len) count = s->read_buffer_len; if (count != 0) memcpy(buf, s->read_buffer, count); s->read_buffer_len -= count; if (s->read_buffer_len != 0) memmove(s->read_buffer, s->read_buffer + count, s->read_buffer_len); return count; } static ssize_t read_through_buffer(mailstream * s, void * buf, size_t count) { size_t left; char * cur_buf; ssize_t bytes_read; cur_buf = buf; left = count; while (left > 0) { bytes_read = mailstream_low_read(s->low, cur_buf, left); if (bytes_read == -1) { if (count == left) return -1; else return count - left; } else if (bytes_read == 0) return count - left; cur_buf += bytes_read; left -= bytes_read; } return count; } ssize_t mailstream_read(mailstream * s, void * buf, size_t count) { ssize_t read_bytes; char * cur_buf; size_t left; if (s == NULL) return -1; left = count; cur_buf = buf; read_bytes = read_from_internal_buffer(s, cur_buf, left); cur_buf += read_bytes; left -= read_bytes; if (left == 0) { #ifdef STREAM_DEBUG STREAM_LOG("<<<<<<< read <<<<<<\n"); STREAM_LOG_BUF(buf, read_bytes); STREAM_LOG("\n"); STREAM_LOG("<<<<<<< end read <<<<<<\n"); #endif return read_bytes; } if (left > s->buffer_max_size) { read_bytes = read_through_buffer(s, cur_buf, left); if (read_bytes == -1) { if (count == left) return -1; else { #ifdef STREAM_DEBUG STREAM_LOG("<<<<<<< read <<<<<<\n"); STREAM_LOG_BUF(buf, count - left); STREAM_LOG("\n"); STREAM_LOG("<<<<<<< end read <<<<<<\n"); #endif return count - left; } } cur_buf += read_bytes; left -= read_bytes; #ifdef STREAM_DEBUG STREAM_LOG("<<<<<<< read <<<<<<\n"); STREAM_LOG_BUF(buf, count - left); STREAM_LOG("\n"); STREAM_LOG("<<<<<<< end read <<<<<<\n"); #endif return count - left; } read_bytes = mailstream_low_read(s->low, s->read_buffer, s->buffer_max_size); if (read_bytes == -1) { if (left == count) return -1; else { #ifdef STREAM_DEBUG STREAM_LOG("<<<<<<< read <<<<<<\n"); STREAM_LOG_BUF(buf, count - left); STREAM_LOG("\n"); STREAM_LOG("<<<<<<< end read <<<<<<\n"); #endif return count - left; } } else s->read_buffer_len += read_bytes; read_bytes = read_from_internal_buffer(s, cur_buf, left); cur_buf += read_bytes; left -= read_bytes; #ifdef STREAM_DEBUG STREAM_LOG("<<<<<<< read <<<<<<\n"); STREAM_LOG_BUF(buf, count - left); STREAM_LOG("\n"); STREAM_LOG("<<<<<<< end read <<<<<<\n"); #endif return count - left; } mailstream_low * mailstream_get_low(mailstream * s) { return s->low; } void mailstream_set_low(mailstream * s, mailstream_low * low) { s->low = low; } int mailstream_close(mailstream * s) { mailstream_low_close(s->low); mailstream_low_free(s->low); free(s->read_buffer); free(s->write_buffer); free(s); return 0; } ssize_t mailstream_feed_read_buffer(mailstream * s) { ssize_t read_bytes; if (s == NULL) return -1; if (s->read_buffer_len == 0) { read_bytes = mailstream_low_read(s->low, s->read_buffer, s->buffer_max_size); if (read_bytes == -1) return -1; s->read_buffer_len += read_bytes; } return s->read_buffer_len; } struct timeval mailstream_network_delay = { .tv_sec = DEFAULT_NETWORK_TIMEOUT, .tv_usec = 0 }; |