diff options
Diffstat (limited to 'cpukit/httpd/url.c')
| -rw-r--r-- | cpukit/httpd/url.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/cpukit/httpd/url.c b/cpukit/httpd/url.c new file mode 100644 index 0000000000..75746fd490 --- /dev/null +++ b/cpukit/httpd/url.c @@ -0,0 +1,203 @@ +/* + * 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; +} + +/******************************************************************************/ |