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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [rtems_webserver/] [url.c] - Blame information for rev 543

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/*
 * url.c -- Parse URLs
 *
 * Copyright (c) Go Ahead Software Inc., 1995-1999. All Rights Reserved.
 *
 * See the file "license.txt" for usage and redistribution license requirements
 */
 
/******************************** Description *********************************/
 
/*
 *      This module parses URLs into their components.
 */
 
/********************************* Includes ***********************************/
 
#include        "wsIntrn.h"
 
/********************************* Statics ************************************/
/*
 *      htmExt is declared in this way to avoid a Linux and Solaris segmentation
 *      fault when a constant string is passed to strlower which could change its
 *      argument.
 */
 
char_t  htmExt[] = T(".htm");
 
 
/*********************************** Code *************************************/
/*
 *      Return the mime type for the given URL given a URL.
 *      The caller supplies the buffer to hold the result.
 *      charCnt is the number of characters the buffer will hold, ascii or UNICODE.
 */
 
char_t *websUrlType(char_t *url, char_t *buf, int charCnt)
{
        sym_t   *sp;
        char_t  *ext, *parsebuf;
 
        a_assert(url && *url);
        a_assert(buf && charCnt > 0);
 
        if (url == NULL || *url == '\0') {
                gstrcpy(buf, T("text/plain"));
                return buf;
        }
        if (websUrlParse(url, &parsebuf, NULL, NULL, NULL, NULL, NULL,
                        NULL, &ext) < 0) {
                gstrcpy(buf, T("text/plain"));
                return buf;
        }
        strlower(ext);
 
/*
 *      Lookup the mime type symbol table to find the relevant content type
 */
        if ((sp = symLookup(websMime, ext)) != NULL) {
                gstrncpy(buf, sp->content.value.string, charCnt);
        } else {
                gstrcpy(buf, T("text/plain"));
        }
        bfree(B_L, parsebuf);
        return buf;
}
 
/******************************************************************************/
/*
 *      Parse the URL. A buffer is allocated to store the parsed URL in *pbuf.
 *      This must be freed by the caller. NOTE: tag is not yet fully supported.
 */
 
int websUrlParse(char_t *url, char_t **pbuf, char_t **phost, char_t **ppath,
        char_t **pport, char_t **pquery, char_t **pproto, char_t **ptag,
        char_t **pext)
{
        char_t          *tok, *cp, *host, *path, *port, *proto, *tag, *query, *ext;
        char_t          *last_delim, *hostbuf, *portbuf, *buf;
        int                     c, len, ulen;
 
        a_assert(url);
        a_assert(pbuf);
 
        ulen = gstrlen(url);
/*
 *      We allocate enough to store a separate hostname and port number fields.
 *      As there are 3 strings in the one buffer, we need room for 3 null chars.
 *      We allocate MAX_PORT_LEN char_t's for the port number.
 */
        len = ulen * 2 + MAX_PORT_LEN + 3;
        if ((buf = balloc(B_L, len * sizeof(char_t))) == NULL) {
                return -1;
        }
        portbuf = &buf[len - MAX_PORT_LEN - 1];
        hostbuf = &buf[ulen+1];
        gstrcpy(buf, url);
        url = buf;
 
/*
 *      Convert the current listen port to a string. We use this if the URL has
 *      no explicit port setting
 */
        stritoa(websGetPort(), portbuf, MAX_PORT_LEN);
        port = portbuf;
        path = T("/");
        proto = T("http");
        host = T("localhost");
        query = T("");
        ext = htmExt;
        tag = T("");
 
        if (gstrncmp(url, T("http://"), 7) == 0) {
                tok = &url[7];
                tok[-3] = '\0';
                proto = url;
                host = tok;
                for (cp = tok; *cp; cp++) {
                        if (*cp == '/') {
                                break;
                        }
                        if (*cp == ':') {
                                *cp++ = '\0';
                                port = cp;
                                tok = cp;
                        }
                }
                if ((cp = gstrchr(tok, '/')) != NULL) {
/*
 *                      If a full URL is supplied, we need to copy the host and port
 *                      portions into static buffers.
 */
                        c = *cp;
                        *cp = '\0';
                        gstrncpy(hostbuf, host, ulen);
                        gstrncpy(portbuf, port, MAX_PORT_LEN);
                        *cp = c;
                        host = hostbuf;
                        port = portbuf;
                        path = cp;
                        tok = cp;
                }
 
        } else {
                path = url;
                tok = url;
        }
 
/*
 *      Parse the tag and the query
 */
        if ((cp = gstrchr(tok, '#')) != NULL) {
                *cp++ = '\0';
                path = tok;
                tok = cp;
        }
        if ((cp = gstrchr(tok, '?')) != NULL) {
                *cp++ = '\0';
                query = cp;
        }
 
/*
 *      Only do the following if asked for the extension
 */
        if (pext) {
                if ((cp = gstrrchr(path, '.')) != NULL) {
                        if ((last_delim = gstrrchr(path, '/')) != NULL) {
                                if (last_delim > cp) {
                                        ext = htmExt;
                                } else {
                                        ext = cp;
                                }
                        } else {
                                ext = cp;
                        }
                } else {
                        if (path[gstrlen(path) - 1] == '/') {
                                ext = htmExt;
                        }
                }
        }
 
/*
 *      Pass back the fields requested (if not NULL)
 */
        if (phost)
                *phost = host;
        if (ppath)
                *ppath = path;
        if (pport)
                *pport = port;
        if (pproto)
                *pproto = proto;
        if (pquery)
                *pquery = query;
        if (ptag)
                *ptag = tag;
        if (pext)
                *pext = ext;
        *pbuf = buf;
        return 0;
}
 
/******************************************************************************/

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [rtems_webserver/] [url.c] - Blame information for rev 543

Line No.	Rev	Author	Line
1	30	unneback	`/*`
2			`* url.c -- Parse URLs`
3			`*`
4			`* Copyright (c) Go Ahead Software Inc., 1995-1999. All Rights Reserved.`
5			`*`
6			`* See the file "license.txt" for usage and redistribution license requirements`
7			`*/`
8
9			`/****************************** Description *******************************/`
10
11			`/*`
12			`* This module parses URLs into their components.`
13			`*/`
14
15			`/******************************* Includes *********************************/`
16
17			`#include "wsIntrn.h"`
18
19			`/******************************* Statics **********************************/`
20			`/*`
21			`* htmExt is declared in this way to avoid a Linux and Solaris segmentation`
22			`* fault when a constant string is passed to strlower which could change its`
23			`* argument.`
24			`*/`
25
26			`char_t htmExt[] = T(".htm");`
27
28
29			`/********************************* Code ***********************************/`
30			`/*`
31			`* Return the mime type for the given URL given a URL.`
32			`* The caller supplies the buffer to hold the result.`
33			`* charCnt is the number of characters the buffer will hold, ascii or UNICODE.`
34			`*/`
35
36			`char_t websUrlType(char_t url, char_t *buf, int charCnt)`
37			`{`
38			`sym_t *sp;`
39			`char_t ext, parsebuf;`
40
41			`a_assert(url && *url);`
42			`a_assert(buf && charCnt > 0);`
43
44			`if (url == NULL \|\| *url == '\0') {`
45			`gstrcpy(buf, T("text/plain"));`
46			`return buf;`
47			`}`
48			`if (websUrlParse(url, &parsebuf, NULL, NULL, NULL, NULL, NULL,`
49			`NULL, &ext) < 0) {`
50			`gstrcpy(buf, T("text/plain"));`
51			`return buf;`
52			`}`
53			`strlower(ext);`
54
55			`/*`
56			`* Lookup the mime type symbol table to find the relevant content type`
57			`*/`
58			`if ((sp = symLookup(websMime, ext)) != NULL) {`
59			`gstrncpy(buf, sp->content.value.string, charCnt);`
60			`} else {`
61			`gstrcpy(buf, T("text/plain"));`
62			`}`
63			`bfree(B_L, parsebuf);`
64			`return buf;`
65			`}`
66
67			`/******************************************************************************/`
68			`/*`
69			`* Parse the URL. A buffer is allocated to store the parsed URL in *pbuf.`
70			`* This must be freed by the caller. NOTE: tag is not yet fully supported.`
71			`*/`
72
73			`int websUrlParse(char_t url, char_t pbuf, char_t phost, char_t *ppath,`
74			`char_t pport, char_t pquery, char_t pproto, char_t ptag,`
75			`char_t **pext)`
76			`{`
77			`char_t tok, cp, host, path, port, proto, tag, query, *ext;`
78			`char_t last_delim, hostbuf, portbuf, buf;`
79			`int c, len, ulen;`
80
81			`a_assert(url);`
82			`a_assert(pbuf);`
83
84			`ulen = gstrlen(url);`
85			`/*`
86			`* We allocate enough to store a separate hostname and port number fields.`
87			`* As there are 3 strings in the one buffer, we need room for 3 null chars.`
88			`* We allocate MAX_PORT_LEN char_t's for the port number.`
89			`*/`
90			`len = ulen * 2 + MAX_PORT_LEN + 3;`
91			`if ((buf = balloc(B_L, len * sizeof(char_t))) == NULL) {`
92			`return -1;`
93			`}`
94			`portbuf = &buf[len - MAX_PORT_LEN - 1];`
95			`hostbuf = &buf[ulen+1];`
96			`gstrcpy(buf, url);`
97			`url = buf;`
98
99			`/*`
100			`* Convert the current listen port to a string. We use this if the URL has`
101			`* no explicit port setting`
102			`*/`
103			`stritoa(websGetPort(), portbuf, MAX_PORT_LEN);`
104			`port = portbuf;`
105			`path = T("/");`
106			`proto = T("http");`
107			`host = T("localhost");`
108			`query = T("");`
109			`ext = htmExt;`
110			`tag = T("");`
111
112			`if (gstrncmp(url, T("http://"), 7) == 0) {`
113			`tok = &url[7];`
114			`tok[-3] = '\0';`
115			`proto = url;`
116			`host = tok;`
117			`for (cp = tok; *cp; cp++) {`
118			`if (*cp == '/') {`
119			`break;`
120			`}`
121			`if (*cp == ':') {`
122			`*cp++ = '\0';`
123			`port = cp;`
124			`tok = cp;`
125			`}`
126			`}`
127			`if ((cp = gstrchr(tok, '/')) != NULL) {`
128			`/*`
129			`* If a full URL is supplied, we need to copy the host and port`
130			`* portions into static buffers.`
131			`*/`
132			`c = *cp;`
133			`*cp = '\0';`
134			`gstrncpy(hostbuf, host, ulen);`
135			`gstrncpy(portbuf, port, MAX_PORT_LEN);`
136			`*cp = c;`
137			`host = hostbuf;`
138			`port = portbuf;`
139			`path = cp;`
140			`tok = cp;`
141			`}`
142
143			`} else {`
144			`path = url;`
145			`tok = url;`
146			`}`
147
148			`/*`
149			`* Parse the tag and the query`
150			`*/`
151			`if ((cp = gstrchr(tok, '#')) != NULL) {`
152			`*cp++ = '\0';`
153			`path = tok;`
154			`tok = cp;`
155			`}`
156			`if ((cp = gstrchr(tok, '?')) != NULL) {`
157			`*cp++ = '\0';`
158			`query = cp;`
159			`}`
160
161			`/*`
162			`* Only do the following if asked for the extension`
163			`*/`
164			`if (pext) {`
165			`if ((cp = gstrrchr(path, '.')) != NULL) {`
166			`if ((last_delim = gstrrchr(path, '/')) != NULL) {`
167			`if (last_delim > cp) {`
168			`ext = htmExt;`
169			`} else {`
170			`ext = cp;`
171			`}`
172			`} else {`
173			`ext = cp;`
174			`}`
175			`} else {`
176			`if (path[gstrlen(path) - 1] == '/') {`
177			`ext = htmExt;`
178			`}`
179			`}`
180			`}`
181
182			`/*`
183			`* Pass back the fields requested (if not NULL)`
184			`*/`
185			`if (phost)`
186			`*phost = host;`
187			`if (ppath)`
188			`*ppath = path;`
189			`if (pport)`
190			`*pport = port;`
191			`if (pproto)`
192			`*pproto = proto;`
193			`if (pquery)`
194			`*pquery = query;`
195			`if (ptag)`
196			`*ptag = tag;`
197			`if (pext)`
198			`*pext = ext;`
199			`*pbuf = buf;`
200			`return 0;`
201			`}`
202
203			`/******************************************************************************/`