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Added code for data lines. For ease of implementation we need glibc

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(custom streams).
This commit is contained in:
Werner Koch 2001-11-19 16:15:43 +00:00
parent 0b17666145
commit ff1ba2fdc7
4 changed files with 155 additions and 16 deletions
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96
assuan/assuan-buffer.c
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@ -149,3 +149,99 @@ _assuan_write_line (ASSUAN_CONTEXT ctx, const char *line )
return rc;
}
/* Write out the data in buffer as datalines with line wrapping and
percent escaping. This fucntion is used for GNU's custom streams */
int
_assuan_cookie_write_data (void *cookie, const char *buffer, size_t size)
{
ASSUAN_CONTEXT ctx = cookie;
char *line;
size_t linelen;
if (ctx->outbound.data.error)
return 0;
line = ctx->outbound.data.line;
linelen = ctx->outbound.data.linelen;
line += linelen;
while (size)
{
/* insert data line header */
if (!linelen)
{
*line++ = 'D';
*line++ = ' ';
linelen += 2;
}
/* copy data, keep some space for the CRLF and to escape one character */
while (size && linelen < LINELENGTH-2-2)
{
if (*buffer == '%' || *buffer == '\r' || *buffer == '\n')
{
sprintf (line, "%%%02X", *(unsigned char*)buffer);
line += 3;
linelen += 3;
buffer++;
}
else
{
*line++ = *buffer++;
linelen++;
}
size--;
}
if (linelen >= LINELENGTH-2-2)
{
*line++ = '\n';
linelen++;
if (writen (ctx->outbound.fd, ctx->outbound.data.line, linelen))
{
ctx->outbound.data.error = ASSUAN_Write_Error;
return 0;
}
line = ctx->outbound.data.line;
linelen = 0;
}
}
ctx->outbound.data.linelen = linelen;
return 0;
}
/* Write out any buffered data
This fucntion is used for GNU's custom streams */
int
_assuan_cookie_write_flush (void *cookie)
{
ASSUAN_CONTEXT ctx = cookie;
char *line;
size_t linelen;
if (ctx->outbound.data.error)
return 0;
line = ctx->outbound.data.line;
linelen = ctx->outbound.data.linelen;
line += linelen;
if (linelen)
{
*line++ = '\n';
linelen++;
if (writen (ctx->outbound.fd, ctx->outbound.data.line, linelen))
{
ctx->outbound.data.error = ASSUAN_Write_Error;
return 0;
}
ctx->outbound.data.linelen = 0;
}
return 0;
}