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[yaz-moved-to-github.git] / src / zgdu.c
1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) Index Data
3  * See the file LICENSE for details.
4  */
5 /**
6  * \file zgdu.c
7  * \brief Implements HTTP and Z39.50 encoding and decoding.
8  */
9 #if HAVE_CONFIG_H
10 #include <config.h>
11 #endif
12
13 #include <string.h>
14 #include "odr-priv.h"
15 #include <yaz/zgdu.h>
16
17 int z_GDU(ODR o, Z_GDU **p, int opt, const char *name)
18 {
19     const char *buf = o->op->buf;
20     if (o->direction == ODR_DECODE) {
21         *p = (Z_GDU *) odr_malloc(o, sizeof(**p));
22         if (o->op->size > 10 && !memcmp(buf, "HTTP/", 5))
23         {
24             (*p)->which = Z_GDU_HTTP_Response;
25             return yaz_decode_http_response(o, &(*p)->u.HTTP_Response);
26
27         }
28         else if (o->op->size > 5 &&
29             buf[0] >= 0x20 && buf[0] < 0x7f
30             && buf[1] >= 0x20 && buf[1] < 0x7f
31             && buf[2] >= 0x20 && buf[2] < 0x7f
32             && buf[3] >= 0x20 && buf[3] < 0x7f)
33         {
34             (*p)->which = Z_GDU_HTTP_Request;
35             return yaz_decode_http_request(o, &(*p)->u.HTTP_Request);
36         }
37         else
38         {
39             (*p)->which = Z_GDU_Z3950;
40             return z_APDU(o, &(*p)->u.z3950, opt, 0);
41         }
42     }
43     else /* ENCODE or PRINT */
44     {
45         switch((*p)->which)
46         {
47         case Z_GDU_HTTP_Response:
48             return yaz_encode_http_response(o, (*p)->u.HTTP_Response);
49         case Z_GDU_HTTP_Request:
50             return yaz_encode_http_request(o, (*p)->u.HTTP_Request);
51         case Z_GDU_Z3950:
52             return z_APDU(o, &(*p)->u.z3950, opt, 0);
53         }
54     }
55     return 0;
56 }
57
58 /*
59  * Local variables:
60  * c-basic-offset: 4
61  * c-file-style: "Stroustrup"
62  * indent-tabs-mode: nil
63  * End:
64  * vim: shiftwidth=4 tabstop=8 expandtab
65  */
66