+++ /dev/null
-/*
- * Copyright (c) 1995-2003, Index Data
- * See the file LICENSE for details.
- *
- * $Id: comstack.c,v 1.16 2003-10-20 18:21:45 adam Exp $
- */
-
-#include <string.h>
-#include <ctype.h>
-
-#include <yaz/comstack.h>
-#include <yaz/tcpip.h>
-#include <yaz/unix.h>
-#include <yaz/odr.h>
-
-static const char *cs_errlist[] =
-{
- "No error or unspecified error",
- "System (lower-layer) error",
- "Operation out of state",
- "No data (operation would block)",
- "New data while half of old buffer is on the line (flow control)",
- "Permission denied",
- "SSL error"
-};
-
-const char *cs_errmsg(int n)
-{
- if (n < 0 || n > 6)
- n = 0;
- return cs_errlist[n];
-}
-
-const char *cs_strerror(COMSTACK h)
-{
- return cs_errmsg(h->cerrno);
-}
-
-void cs_get_host_args(const char *type_and_host, const char **args)
-{
-
- *args = "";
- if (*type_and_host && strncmp(type_and_host, "unix:", 5))
- {
- const char *cp;
- cp = strstr(type_and_host, "://");
- if (cp)
- cp = cp+3;
- else
- cp = type_and_host;
- cp = strchr(cp, '/');
- if (cp)
- *args = cp+1;
- }
-}
-
-COMSTACK cs_create_host(const char *type_and_host, int blocking, void **vp)
-{
- enum oid_proto proto = PROTO_Z3950;
- const char *host = 0;
- COMSTACK cs;
- CS_TYPE t;
-
- if (strncmp (type_and_host, "tcp:", 4) == 0)
- {
- t = tcpip_type;
- host = type_and_host + 4;
- }
- else if (strncmp (type_and_host, "ssl:", 4) == 0)
- {
-#if HAVE_OPENSSL_SSL_H
- t = ssl_type;
- host = type_and_host + 4;
-#else
- return 0;
-#endif
- }
- else if (strncmp (type_and_host, "unix:", 5) == 0)
- {
-#ifndef WIN32
- t = unix_type;
- host = type_and_host + 5;
-#else
- return 0;
-#endif
- }
- else if (strncmp(type_and_host, "http:", 5) == 0)
- {
- t = tcpip_type;
- host = type_and_host + 5;
- if (host[0] == '/' && host[1] == '/')
- host = host + 2;
- proto = PROTO_HTTP;
- }
- else if (strncmp(type_and_host, "https:", 6) == 0)
- {
-#if HAVE_OPENSSL_SSL_H
- t = ssl_type;
- host = type_and_host + 6;
- if (host[0] == '/' && host[1] == '/')
- host = host + 2;
- proto = PROTO_HTTP;
-#else
- return 0;
-#endif
- }
- else
- {
- t = tcpip_type;
- host = type_and_host;
-
- }
- cs = cs_create (t, blocking, proto);
- if (!cs)
- return 0;
-
- if (!(*vp = cs_straddr(cs, host)))
- {
- cs_close (cs);
- return 0;
- }
- return cs;
-}
-
-int cs_look (COMSTACK cs)
-{
- return cs->event;
-}
-
-int cs_complete_auto(const unsigned char *buf, int len)
-{
- if (len > 5 && buf[0] >= 0x20 && buf[0] < 0x7f
- && buf[1] >= 0x20 && buf[1] < 0x7f
- && buf[2] >= 0x20 && buf[2] < 0x7f)
- {
- /* deal with HTTP request/response */
- int i = 2, content_len = 0, chunked = 0;
-
- while (i <= len-4)
- {
- if (i > 8192)
- return i; /* do not allow more than 8K HTTP header */
- if (buf[i] == '\r' && buf[i+1] == '\n')
- {
- i += 2;
- if (buf[i] == '\r' && buf[i+1] == '\n')
- {
- if (chunked)
- {
- while(1)
- {
- int chunk_len = 0;
- i += 2;
-#if 0
-/* debugging */
- if (i <len-2)
- {
- printf ("\n>>>");
- for (j = i; j <= i+4; j++)
- printf ("%c", buf[j]);
- printf ("<<<\n");
- }
-#endif
- while (1)
- if (i >= len-2) {
-#if 0
-/* debugging */
- printf ("XXXXXXXX not there yet 1\n");
- printf ("i=%d len=%d\n", i, len);
-#endif
- return 0;
- } else if (isdigit(buf[i]))
- chunk_len = chunk_len * 16 +
- (buf[i++] - '0');
- else if (isupper(buf[i]))
- chunk_len = chunk_len * 16 +
- (buf[i++] - ('A'-10));
- else if (islower(buf[i]))
- chunk_len = chunk_len * 16 +
- (buf[i++] - ('a'-10));
- else
- break;
- if (buf[i] != '\r' || buf[i+1] != '\n' ||
- chunk_len < 0)
- return i+2; /* bad. stop now */
- if (chunk_len == 0)
- {
- /* consider trailing headers .. */
- while(i <= len-4)
- {
- if (buf[i] == '\r' && buf[i+1] == '\n' &&
- buf[i+2] == '\r' && buf[i+3] == '\n')
- if (len >= i+4)
- return i+4;
- i++;
- }
-#if 0
-/* debugging */
- printf ("XXXXXXXXX not there yet 2\n");
- printf ("i=%d len=%d\n", i, len);
-#endif
- return 0;
- }
- i += chunk_len+2;
- }
- }
- else
- { /* not chunked ; inside body */
- /* i += 2 seems not to work with GCC -O2 ..
- so i+2 is used instead .. */
- if (len >= (i+2)+ content_len)
- return (i+2)+ content_len;
- }
- break;
- }
- else if (i < len - 21 &&
- !memcmp(buf+i, "Transfer-Encoding: ", 18))
- {
- i+=18;
- if (buf[i] == ' ')
- i++;
- if (i < len - 8)
- if (!memcmp(buf+i, "chunked", 7))
- chunked = 1;
- }
- else if (i < len - 18 &&
- !memcmp(buf+i, "Content-Length: ", 15))
- {
- i+= 15;
- if (buf[i] == ' ')
- i++;
- content_len = 0;
- while (i <= len-4 && isdigit(buf[i]))
- content_len = content_len*10 + (buf[i++] - '0');
- if (content_len < 0) /* prevent negative offsets */
- content_len = 0;
- }
- else
- i++;
- }
- else
- i++;
- }
- return 0;
- }
- return completeBER(buf, len);
-}
projects / yaz-moved-to-github.git / blobdiff