diff options
Diffstat (limited to 'src/buffer.c')
| -rw-r--r-- | src/buffer.c | 41 |
1 files changed, 17 insertions, 24 deletions
diff --git a/src/buffer.c b/src/buffer.c index cfcdada..faf871d 100644 --- a/src/buffer.c +++ b/src/buffer.c @@ -1,4 +1,4 @@ -/* $Id: buffer.c,v 1.16 2001-11-22 00:31:10 rjkaes Exp $ +/* $Id: buffer.c,v 1.17 2001-11-25 22:05:42 rjkaes Exp $ * * The buffer used in each connection is a linked list of lines. As the lines * are read in and written out the buffer expands and contracts. Basically, @@ -8,7 +8,7 @@ * functions act on each end (the names are taken from what Perl uses to act on * the ends of an array. :) * - * Copyright (C) 1999 Robert James Kaes (rjkaes@flarenet.com) + * Copyright (C) 1999,2001 Robert James Kaes (rjkaes@users.sourceforge.net) * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -39,9 +39,8 @@ struct bufline_s { /* * Take a string of data and a length and make a new line which can be added - * to the buffer. We don't make a copy of the data, but simply copy the - * pointer into the structure. In other words, when you insert data into the - * buffer, the buffer becomes responsible for freeing it. + * to the buffer. The data IS copied, so make sure if you allocated your + * data buffer on the heap, delete it because you now have TWO copies. */ static struct bufline_s * makenewline(unsigned char *data, size_t length) @@ -54,7 +53,13 @@ makenewline(unsigned char *data, size_t length) if (!(newline = safemalloc(sizeof(struct bufline_s)))) return NULL; - newline->string = data; + if (!(newline->string = safemalloc(length))) { + safefree(newline); + return NULL; + } + + memcpy(newline->string, data, length); + newline->next = NULL; newline->length = length; @@ -123,9 +128,9 @@ delete_buffer(struct buffer_s *buffptr) } /* - * Push a new line on to the end of the buffer + * Push a new line on to the end of the buffer. */ -static int +int add_to_buffer(struct buffer_s *buffptr, unsigned char *data, size_t length) { struct bufline_s *newline; @@ -184,11 +189,10 @@ remove_from_buffer(struct buffer_s *buffptr) */ #define READ_BUFFER_SIZE (1024 * 2) ssize_t -readbuff(int fd, struct buffer_s * buffptr) +read_buffer(int fd, struct buffer_s * buffptr) { ssize_t bytesin; - unsigned char *buffer; - unsigned char *newbuffer; + unsigned char buffer[READ_BUFFER_SIZE]; assert(fd >= 0); assert(buffptr != NULL); @@ -196,20 +200,10 @@ readbuff(int fd, struct buffer_s * buffptr) if (BUFFER_SIZE(buffptr) >= READ_BUFFER_SIZE) return 0; - buffer = safemalloc(READ_BUFFER_SIZE); - if (!buffer) - return 0; - bytesin = read(fd, buffer, READ_BUFFER_SIZE - BUFFER_SIZE(buffptr)); if (bytesin > 0) { - newbuffer = saferealloc(buffer, bytesin); - if (!newbuffer) { - safefree(buffer); - return 0; - } - - if (add_to_buffer(buffptr, newbuffer, bytesin) < 0) { + if (add_to_buffer(buffptr, buffer, bytesin) < 0) { log_message(LOG_ERR, "readbuff: add_to_buffer() error."); return -1; @@ -217,7 +211,6 @@ readbuff(int fd, struct buffer_s * buffptr) return bytesin; } else { - safefree(buffer); if (bytesin == 0) { /* connection was closed by client */ return -1; @@ -247,7 +240,7 @@ readbuff(int fd, struct buffer_s * buffptr) * Takes a connection and returns the number of bytes written. */ ssize_t -writebuff(int fd, struct buffer_s * buffptr) +write_buffer(int fd, struct buffer_s * buffptr) { ssize_t bytessent; struct bufline_s *line; |