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r17426@catbus: nickm | 2007-12-28 21:12:29 -0500

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Remove need for buf_pullup in fetch_line_from_buf().


svn:r13002
This commit is contained in:
Nick Mathewson 2007-12-29 02:33:42 +00:00
parent c03ef9c395
commit bd32982c77
2 changed files with 27 additions and 13 deletions
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31
src/or/buffers.c
View file

@ -1398,6 +1398,22 @@ peek_buf_has_control0_command(buf_t *buf)
return 0; return 0;
} }
/** DOCDOC */
static int
buf_find_offset_of_char(buf_t *buf, char ch)
{
chunk_t *chunk;
int offset = 0;
for (chunk = buf->head; chunk; chunk = chunk->next) {
char *cp = memchr(chunk->data, ch, chunk->datalen);
if (cp)
return offset + (cp - chunk->data);
else
offset += chunk->datalen;
}
return -1;
}
/** Try to read a single LF-terminated line from <b>buf</b>, and write it, /** Try to read a single LF-terminated line from <b>buf</b>, and write it,
* NUL-terminated, into the *<b>data_len</b> byte buffer at <b>data_out</b>. * NUL-terminated, into the *<b>data_len</b> byte buffer at <b>data_out</b>.
* Set *<b>data_len</b> to the number of bytes in the line, not counting the * Set *<b>data_len</b> to the number of bytes in the line, not counting the
@ -1408,21 +1424,18 @@ peek_buf_has_control0_command(buf_t *buf)
int int
fetch_from_buf_line(buf_t *buf, char *data_out, size_t *data_len) fetch_from_buf_line(buf_t *buf, char *data_out, size_t *data_len)
{ {
char *cp;
size_t sz; size_t sz;
int offset;
if (!buf->head) if (!buf->head)
return 0; return 0;
/* XXXX020 pull up less aggressively. And implement setting *data_len
* properly in cases where we return -1. */ offset = buf_find_offset_of_char(buf, '\n');
buf_pullup(buf, *data_len, 0); if (offset < 0)
cp = memchr(buf->head->data, '\n', buf->head->datalen);
if (!cp) {
return 0; return 0;
} sz = (size_t) offset;
sz = cp - buf->head->data;
if (sz+2 > *data_len) { if (sz+2 > *data_len) {
*data_len = sz+2; *data_len = sz + 2;
return -1; return -1;
} }
fetch_from_buf(data_out, sz+1, buf); fetch_from_buf(data_out, sz+1, buf);

9
src/or/control.c
View file

@ -2631,10 +2631,11 @@ connection_control_process_inbuf(control_connection_t *conn)
/* Line not all here yet. Wait. */ /* Line not all here yet. Wait. */
return 0; return 0;
else if (r == -1) { else if (r == -1) {
while (conn->incoming_cmd_len < data_len+conn->incoming_cmd_cur_len) /*XXXX020 impose some maximum on length! */
conn->incoming_cmd_len *= 2; while (conn->incoming_cmd_len < data_len+conn->incoming_cmd_cur_len)
conn->incoming_cmd = tor_realloc(conn->incoming_cmd, conn->incoming_cmd_len *= 2;
conn->incoming_cmd_len); conn->incoming_cmd = tor_realloc(conn->incoming_cmd,
conn->incoming_cmd_len);
} }
} while (r != 1); } while (r != 1);