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AHTURLTools.c
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1.65:
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Fri May 21 07:33:02 1999 UTC (25 years, 1 month ago) by
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MAIN
CVS tags:
HEAD
Bug fixes:
- amaya crashed when a mathematical formula was copied/pasted from one
page to another.
- there were a lot of memory leaks.
- it was impossible to set font-size to 20 in the preference menu.
Irene
/*
*
* (c) COPYRIGHT MIT and INRIA, 1996.
* Please first read the full copyright statement in file COPYRIGHT.
*
*/
/*
* AHTURLTools.c: contains all the functions for testing, manipulating,
* and normalizing URLs. It also contains a local copy of the libWWW
* URL parsing functions.
*
* Authors: J. Kahan, I. Vatton
* R. Guetari (Stuff related to Windows).
*
*/
#define THOT_EXPORT extern
#include "amaya.h"
#include "init_f.h"
#include "AHTURLTools_f.h"
#define MAX_PRINT_URL_LENGTH 50
typedef struct _HTURI {
char * access; /* Now known as "scheme" */
char * host;
char * absolute;
char * relative;
char * fragment;
} HTURI;
/*----------------------------------------------------------------------
ConvertToLowerCase
Converts a string to lowercase.
----------------------------------------------------------------------*/
#ifdef __STDC__
void ConvertToLowerCase (char *string)
#else /* __STDC__ */
void ConvertToLowerCase (string)
char *string;
#endif /* __STDC__ */
{
int i;
if (!string)
return;
for (i = 0; string[i] != EOS; i++)
string[i] = tolower (string[i]);
}
/*----------------------------------------------------------------------
ExplodeURL
----------------------------------------------------------------------*/
#ifdef __STDC__
void ExplodeURL (char *url, char **proto, char **host, char **dir, char **file)
#else
void ExplodeURL (url, proto, host, dir, file)
char *url;
char **proto;
char **host;
char **dir;
char **file;
#endif
{
char *curr, *temp;
char used_sep;
if (url && strchr (url, URL_SEP))
used_sep = URL_SEP;
else
used_sep = DIR_SEP;
if ((url == NULL) || (proto == NULL) || (host == NULL) ||
(dir == NULL) || (file == NULL))
return;
/* initialize every pointer */
*proto = *host = *dir = *file = NULL;
/* skip any leading space */
while ((*url == SPACE) || (*url == TAB))
url++;
curr = url;
if (*curr == 0)
goto finished;
/* go to the end of the URL */
while ((*curr != 0) && (*curr != SPACE) && (*curr != '\b') &&
(*curr != '\r') && (*curr != EOL))
curr++;
/* mark the end of the chain */
*curr = EOS;
curr--;
if (curr <= url)
goto finished;
/* search the next DIR_SEP indicating the beginning of the file name */
do
curr--;
while ((curr >= url) && (*curr != used_sep));
if (curr < url)
goto finished;
*file = curr + 1;
/* mark the end of the dir */
*curr = EOS;
curr--;
if (curr < url)
goto finished;
/* search for the DIR_STR indicating the host name start */
while ((curr > url) && ((*curr != used_sep) || (*(curr + 1) != used_sep)))
curr--;
/* if we found it, separate the host name from the directory */
if ((*curr == DIR_SEP) && (*(curr + 1) == used_sep))
{
*host = temp = curr + 2;
while ((*temp != 0) && (*temp != used_sep))
temp++;
if (*temp == used_sep)
{
*temp = EOS;
*dir = temp + 1;
}
}
else
*dir = curr;
if (curr <= url)
goto finished;
/* mark the end of the proto */
*curr = EOS;
curr--;
if (curr < url)
goto finished;
if (*curr == ':')
{
*curr = EOS;
curr--;
}
else
goto finished;
if (curr < url)
goto finished;
while ((curr > url) && (isalpha (*curr)))
curr--;
*proto = curr;
finished:;
#ifdef AMAYA_DEBUG
fprintf (stderr, "ExplodeURL(%s)\n\t", url);
if (*proto)
fprintf (stderr, "proto : %s, ", *proto);
if (*host)
fprintf (stderr, "host : %s, ", *host);
if (*dir)
fprintf (stderr, "dir : %s, ", *dir);
if (*file)
fprintf (stderr, "file : %s ", *file);
fprintf (stderr, "\n");
#endif
}
/*----------------------------------------------------------------------
ExtractSuffix extract suffix from document nane.
----------------------------------------------------------------------*/
#ifdef __STDC__
void ExtractSuffix (STRING aName, STRING aSuffix)
#else
void ExtractSuffix (aName, aSuffix)
STRING aName;
STRING aSuffix;
#endif
{
int lg, i;
STRING ptr, oldptr;
if (!aSuffix || !aName)
/* bad suffix */
return;
aSuffix[0] = EOS;
lg = ustrlen (aName);
if (lg)
{
/* the name is not empty */
oldptr = ptr = &aName[0];
do
{
ptr = ustrrchr (oldptr, '.');
if (ptr)
oldptr = &ptr[1];
}
while (ptr);
i = (int) (oldptr) - (int) (aName); /* name length */
if (i > 1)
{
aName[i - 1] = EOS;
if (i != lg)
ustrcpy (aSuffix, oldptr);
}
}
}
/*----------------------------------------------------------------------
IsHTMLName
returns TRUE if path points to an HTML resource.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsHTMLName (const char *path)
#else /* __STDC__ */
boolean IsHTMLName (path)
const char *path;
#endif /* __STDC__ */
{
char temppath[MAX_LENGTH];
char suffix[MAX_LENGTH];
char nsuffix[MAX_LENGTH];
int i;
if (!path)
return (FALSE);
strcpy (temppath, path);
ExtractSuffix (temppath, suffix);
/* Normalize the suffix */
i = 0;
while (suffix[i] != EOS && i < MAX_LENGTH -1)
{
nsuffix[i] = tolower (suffix[i]);
i++;
}
nsuffix[i] = EOS;
if (!strcmp (nsuffix, "html") ||
!strcmp (nsuffix, "htm") ||
!strcmp (nsuffix, "shtml") ||
!strcmp (nsuffix, "xht") ||
!strcmp (nsuffix, "xhtm") ||
!strcmp (nsuffix, "xhtml"))
return (TRUE);
else if (!strcmp (nsuffix, "gz"))
{
/* take into account compressed files */
ExtractSuffix (temppath, suffix);
/* Normalize the suffix */
i = 0;
while (suffix[i] != EOS && i < MAX_LENGTH -1)
{
nsuffix[i] = tolower (suffix[i]);
i++;
}
nsuffix[i] = EOS;
if (!strcmp (nsuffix, "html") ||
!strcmp (nsuffix, "htm") ||
!strcmp (nsuffix, "shtml") ||
!strcmp (nsuffix, "xht") ||
!strcmp (nsuffix, "xhtm") ||
!strcmp (nsuffix, "xhtml"))
return (TRUE);
else
return (FALSE);
}
else
return (FALSE);
}
/*----------------------------------------------------------------------
IsXMLName
returns TRUE if path points to an XML resource.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsXMLName (const char *path)
#else /* __STDC__ */
boolean IsXMLName (path)
const char *path;
#endif /* __STDC__ */
{
char temppath[MAX_LENGTH];
char suffix[MAX_LENGTH];
if (!path)
return (FALSE);
strcpy (temppath, path);
ExtractSuffix (temppath, suffix);
if (!strcasecmp (suffix, "xml") ||
!strcasecmp (suffix, "xht") ||
!strcmp (suffix, "xhtm") ||
!strcmp (suffix, "xhtml"))
return (TRUE);
else if (!strcmp (suffix, "gz"))
{
/* take into account compressed files */
ExtractSuffix (temppath, suffix);
if (!strcasecmp (suffix, "xml") ||
!strcasecmp (suffix, "xht") ||
!strcmp (suffix, "xhtm") ||
!strcmp (suffix, "xhtml"))
return (TRUE);
else
return (FALSE);
}
else
return (FALSE);
}
/*----------------------------------------------------------------------
IsCSSName
returns TRUE if path points to an XML resource.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsCSSName (const char *path)
#else /* __STDC__ */
boolean IsCSSName (path)
const char *path;
#endif /* __STDC__ */
{
char temppath[MAX_LENGTH];
char suffix[MAX_LENGTH];
if (!path)
return (FALSE);
strcpy (temppath, path);
ExtractSuffix (temppath, suffix);
if (!strcasecmp (suffix, "css"))
return (TRUE);
else if (!strcmp (suffix, "gz"))
{
/* take into account compressed files */
ExtractSuffix (temppath, suffix);
if (!strcasecmp (suffix, "css"))
return (TRUE);
else
return (FALSE);
}
else
return (FALSE);
}
/*----------------------------------------------------------------------
IsImageName
returns TRUE if path points to an image resource.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsImageName (const char *path)
#else /* __STDC__ */
boolean IsImageName (path)
const char *path;
#endif /* __STDC__ */
{
char temppath[MAX_LENGTH];
char suffix[MAX_LENGTH];
char nsuffix[MAX_LENGTH];
int i;
if (!path)
return (FALSE);
strcpy (temppath, path);
ExtractSuffix (temppath, suffix);
/* Normalize the suffix */
i = 0;
while (suffix[i] != EOS && i < MAX_LENGTH -1)
{
nsuffix[i] = tolower (suffix[i]);
i++;
}
nsuffix[i] = EOS;
if ((!strcmp (nsuffix, "gif")) || (!strcmp (nsuffix, "xbm")) ||
(!strcmp (nsuffix, "xpm")) || (!strcmp (nsuffix, "jpg")) ||
(!strcmp (nsuffix, "png")) || (!strcmp (nsuffix, "au")))
return (TRUE);
return (FALSE);
}
/*----------------------------------------------------------------------
IsImageType
returns TRUE if type points to an image resource.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsImageType (const char *type)
#else /* __STDC__ */
boolean IsImageType (type)
const char *type;
#endif /* __STDC__ */
{
char temptype[MAX_LENGTH];
int i;
if (!type)
return (FALSE);
strcpy (temptype, type);
/* Normalize the type */
i = 0;
while (temptype[i] != EOS)
{
temptype[i] = tolower (temptype[i]);
i++;
}
if ((!strcmp (temptype, "gif")) || (!strcmp (temptype, "x-xbitmap")) ||
(!strcmp (temptype, "x-xpixmap")) || (!strcmp (temptype, "jpeg")) ||
(!strcmp (temptype, "png")))
return (TRUE);
return (FALSE);
}
/*----------------------------------------------------------------------
IsTextName
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsTextName (const char *path)
#else /* __STDC__ */
boolean IsTextName (path)
const char *path;
#endif /* __STDC__ */
{
char temppath[MAX_LENGTH];
char suffix[MAX_LENGTH];
char nsuffix[MAX_LENGTH];
int i;
if (!path)
return (FALSE);
strcpy (temppath, path);
ExtractSuffix (temppath, suffix);
/* Normalize the suffix */
i = 0;
while (suffix[i] != EOS && i < MAX_LENGTH -1)
{
nsuffix[i] = tolower (suffix[i]);
i++;
}
nsuffix[i] = EOS;
if ((!strcmp (nsuffix, "txt")) || (!strcmp (nsuffix, "dtd")))
return (TRUE);
else if (!strcmp (nsuffix, "gz"))
{
/* take into account compressed files */
ExtractSuffix (temppath, suffix);
/* Normalize the suffix */
i = 0;
while (suffix[i] != EOS && i < MAX_LENGTH -1)
{
nsuffix[i] = tolower (suffix[i]);
i++;
}
nsuffix[i] = EOS;
if ((!strcmp (nsuffix, "txt")) || (!strcmp (nsuffix, "dtd")))
return (TRUE);
else
return (FALSE);
}
else
return (FALSE);
}
/*----------------------------------------------------------------------
IsHTTPPath
returns TRUE if path is in fact an http URL.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsHTTPPath (const char *path)
#else /* __STDC__ */
boolean IsHTTPPath (path)
const char *path;
#endif /* __STDC__ */
{
if (!path)
return FALSE;
if ((!strncmp (path, "http:", 5) != 0)
|| !strncmp (path, "internal:", 9))
return TRUE;
return FALSE;
}
/*----------------------------------------------------------------------
IsWithParameters
returns TRUE if url has a concatenated query string.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsWithParameters (const char *url)
#else /* __STDC__ */
boolean IsWithParameters (url)
const char *url;
#endif /* __STDC__ */
{
int i;
if ((!url) || (url[0] == EOS))
return FALSE;
i = strlen (url) - 1;
while (i > 0 && url[i--] != '?')
if (i < 0)
return FALSE;
/* There is a parameter */
return TRUE;
}
/*----------------------------------------------------------------------
IsW3Path
returns TRUE if path is in fact a URL.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsW3Path (const char *path)
#else /* __STDC__ */
boolean IsW3Path (path)
const char *path;
#endif /* __STDC__ */
{
if ((strncmp (path, "http:", 5)) && (strncmp (path, "ftp:", 4)) &&
(strncmp (path, "telnet:", 7)) && (strncmp (path, "wais:", 5)) &&
(strncmp (path, "news:", 5)) && (strncmp (path, "gopher:", 7)) &&
(strncmp (path, "mailto:", 7)) && (strncmp (path, "archie:", 7)))
return FALSE;
return TRUE;
}
/*----------------------------------------------------------------------
IsValidProtocol
returns true if the url protocol is supported by Amaya.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsValidProtocol (const char *url)
#else /* __STDC__ */
boolean IsValidProtocol (url)
const char *url;
#endif /* __STDC__ */
{
if (!strncmp (url, "http:", 5)
|| !strncmp (url, "internal:", 9))
/* experimental */
/*** || !strncmp (url, "ftp:", 4) ***/
/*** || !strncmp (path, "news:", 5)***/
return (TRUE);
else
return (FALSE);
}
/*----------------------------------------------------------------------
GetBaseURL
normalizes orgName according to a base associated with doc, and
following the standard URL format rules.
The function returns the base used to solve relative URL and SRC:
- the base of the document,
- or the document path (without document name).
----------------------------------------------------------------------*/
#ifdef __STDC__
char *GetBaseURL (Document doc)
#else /* __STDC__ */
char *GetBaseURL (doc)
Document doc;
#endif /* __STDC__ */
{
Element el;
ElementType elType;
AttributeType attrType;
Attribute attr;
char *ptr, *basename;
int length;
/* @@@ irene */
if (!DocumentURLs[doc])
return NULL;
basename = TtaGetMemory (MAX_LENGTH);
strncpy (basename, DocumentURLs[doc], MAX_LENGTH-1);
basename[MAX_LENGTH-1] = EOS;
length = MAX_LENGTH -1;
/* get the root element */
el = TtaGetMainRoot (doc);
/* search the BASE element */
elType.ElSSchema = TtaGetDocumentSSchema (doc);
elType.ElTypeNum = HTML_EL_HEAD;
el = TtaSearchTypedElement (elType, SearchForward, el);
if (el)
{
elType.ElTypeNum = HTML_EL_BASE;
el = TtaSearchTypedElement (elType, SearchInTree, el);
}
if (el)
{
/* The document has a BASE element -> Get the HREF attribute */
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = HTML_ATTR_HREF_;
attr = TtaGetAttribute (el, attrType);
if (attr)
{
/* Use the base path of the document */
TtaGiveTextAttributeValue (attr, basename, &length);
/* base and orgName have to be separated by a DIR_SEP */
length--;
if (basename[0] != EOS && basename[length] != URL_SEP && basename[length] != DIR_SEP)
/* verify if the base has the form "protocol://server:port" */
{
ptr = AmayaParseUrl (basename, "", AMAYA_PARSE_ACCESS |
AMAYA_PARSE_HOST |
AMAYA_PARSE_PUNCTUATION);
if (ptr && !strcmp (ptr, basename))
{
/* it has this form, we complete it by adding a URL_STR */
if (strchr (basename, DIR_SEP))
strcat (basename, DIR_STR);
else
strcat (basename, URL_STR);
length++;
}
if (ptr)
TtaFreeMemory (ptr);
}
}
}
/* Remove anything after the last DIR_SEP char. If no such char is found,
* then search for the first ":" char, hoping that what's before that is a
* protocol. If found, end the string there. If neither char is found,
* then discard the whole base element.
*/
length = strlen (basename) - 1;
/* search for the last DIR_SEP char */
while (length >= 0 && basename[length] != URL_SEP && basename[length] != DIR_SEP)
length--;
if (length >= 0)
/* found the last DIR_SEP char, end the string there */
basename[length + 1] = EOS;
else
/* search for the first PATH_STR char */
{
for (length = 0; basename[length] != ':' &&
basename[length] != EOS; length ++);
if (basename[length] == ':')
/* found, so end the string there */
basename[length + 1] = EOS;
else
/* not found, discard the base */
basename[0] = EOS;
}
return (basename);
}
/*----------------------------------------------------------------------
GetLocalPath
Allocate and return the local document path associated to the url
----------------------------------------------------------------------*/
#ifdef __STDC__
char *GetLocalPath (Document doc, char *url)
#else /* __STDC__ */
char *GetLocalPath (doc, url)
Document doc;
char *url;
#endif /* __STDC__ */
{
char *ptr, *n;
char *documentname;
char url_sep;
int len;
boolean noFile;
if (url != NULL)
{
/* check whether the file name exists */
len = strlen (url) - 1;
if (IsW3Path)
url_sep = '/';
else
url_sep = DIR_SEP;
noFile = (url[len] == url_sep);
if (noFile)
url[len] = EOS;
ptr = TtaGetMemory (MAX_LENGTH);
documentname = TtaGetMemory (MAX_LENGTH);
TtaExtractName (url, ptr, documentname);
sprintf (ptr, "%s%s%d%s", TempFileDirectory, DIR_STR, doc, DIR_STR);
if (!TtaCheckDirectory (ptr))
/* directory did not exist */
# ifdef _WINDOWS
_mkdir (ptr);
# else /* !_WINDOWS */
mkdir (ptr, S_IRWXU);
# endif /* !_WINDOWS */
/* don't include the query string within document name */
n = strrchr(documentname, '?');
if (n != NULL)
*n = EOS;
/* don't include ':' within document name */
n = strchr (documentname, ':');
if (n != NULL)
*n = EOS;
strcat (ptr, documentname);
TtaFreeMemory (documentname);
/* restore the url */
if (noFile)
url[len] = url_sep;
return (ptr);
}
else
return (NULL);
}
/*----------------------------------------------------------------------
NormalizeURL
normalizes orgName according to a base associated with doc, and
following the standard URL format rules.
if doc is 0 and otherPath not NULL, normalizes orgName according to this
other path.
The function returns the new complete and normalized URL
or file name path (newName) and the name of the document (docName).
N.B. If the function can't find out what's the docName, it assigns
the name "noname.html".
----------------------------------------------------------------------*/
#ifdef __STDC__
void NormalizeURL (char *orgName, Document doc, char *newName, char *docName, char *otherPath)
#else /* __STDC__ */
void NormalizeURL (orgName, doc, newName, docName, otherPath)
char *orgName;
Document doc;
char *newName;
char *docName;
char *otherPath;
#endif /* __STDC__ */
{
char *basename;
char tempOrgName[MAX_LENGTH];
char *ptr;
char used_sep;
int length;
boolean check;
# ifdef _WINDOWS
int ndx;
# endif /* _WINDOWS */
if (!newName || !docName)
return;
if (doc != 0)
basename = GetBaseURL (doc);
else if (otherPath != NULL)
basename = TtaStrdup (otherPath);
else
basename = NULL;
/*
* Clean orgName
* Make sure we have a complete orgName, without any leading or trailing
* white spaces, or trailinbg new lines
*/
ptr = orgName;
/* skip leading white space and new line characters */
while ((*ptr == ' ' || *ptr == EOL) && *ptr++ != EOS);
strncpy (tempOrgName, ptr, MAX_LENGTH -1);
tempOrgName[MAX_LENGTH -1] = EOS;
/*
* Make orgName a complete URL
* If the URL does not include a protocol, then try to calculate
* one using the doc's base element (if it exists),
*/
if (tempOrgName[0] == EOS)
{
newName[0] = EOS;
TtaFreeMemory (basename);
return;
}
/* clean trailing white space */
length = strlen (tempOrgName) - 1;
while (tempOrgName[length] == SPACE && tempOrgName[length] == EOL)
{
tempOrgName[length] = EOS;
length--;
}
/* remove extra dot (which dot???) */
/* ugly, but faster than a strcmp */
if (tempOrgName[length] == '.'
&& (length == 0 || tempOrgName[length-1] != '.'))
tempOrgName[length] = EOS;
if (IsW3Path (tempOrgName))
{
/* the name is complete, go to the Sixth Step */
strcpy (newName, tempOrgName);
SimplifyUrl (&newName);
/* verify if the URL has the form "protocol://server:port" */
ptr = AmayaParseUrl (newName, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
if (ptr && !strcmp (ptr, newName)) /* it has this form, we complete it by adding a DIR_STR */
strcat (newName, URL_STR);
if (ptr)
TtaFreeMemory (ptr);
}
else if ( basename == NULL)
/* the name is complete, go to the Sixth Step */
strcpy (newName, tempOrgName);
else
{
/* Calculate the absolute URL, using the base or document URL */
# ifdef _WINDOWS
if (!IsW3Path (basename))
{
length = strlen (tempOrgName);
for (ndx = 0; ndx < length; ndx++)
if (tempOrgName [ndx] == '/')
tempOrgName [ndx] = '\\';
}
# endif /* _WINDOWS */
ptr = AmayaParseUrl (tempOrgName, basename, AMAYA_PARSE_ALL);
if (ptr)
{
SimplifyUrl (&ptr);
strcpy (newName, ptr);
TtaFreeMemory (ptr);
}
else
newName[0] = EOS;
}
TtaFreeMemory (basename);
/*
* Prepare the docname that will refer to this ressource in the
* .amaya directory. If the new URL finishes on DIR_SEP, then use
* noname.html as a default ressource name
*/
if (newName[0] != EOS)
{
length = strlen (newName) - 1;
if (newName[length] == URL_SEP || newName[length] == DIR_SEP)
{
used_sep = newName[length];
check = TRUE;
while (check)
{
length--;
while (length >= 0 && newName[length] != used_sep)
length--;
if (!strncmp (&newName[length+1], "..", 2))
{
newName[length+1] = EOS;
/* remove also previous directory */
length--;
while (length >= 0 && newName[length] != used_sep)
length--;
if (strncmp (&newName[length+1], "//", 2))
/* don't remove server name */
newName[length+1] = EOS;
}
else if (!strncmp (&newName[length+1], ".", 1))
newName[length+1] = EOS;
else
check = FALSE;
}
strcpy (docName, "noname.html");
/* docname was not comprised inside the URL, so let's */
/* assign the default ressource name */
strcpy (docName, "noname.html");
}
else
{ /* docname is comprised inside the URL */
while (length >= 0 && newName[length] != URL_SEP && newName[length] != DIR_SEP)
length--;
if (length < 0)
strcpy (docName, newName);
else
strcpy (docName, &newName[length+1]);
}
}
else
docName[0] = EOS;
}
/*----------------------------------------------------------------------
IsSameHost
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean IsSameHost (const char *url1, const char *url2)
#else /* __STDC__ */
boolean IsSameHost (url1, url2)
const char *url1;
const char *url2;
#endif /* __STDC__ */
{
char *basename_ptr1, *basename_ptr2;
boolean result;
basename_ptr1 = AmayaParseUrl (url1, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
basename_ptr2 = AmayaParseUrl (url2, "", AMAYA_PARSE_ACCESS | AMAYA_PARSE_HOST | AMAYA_PARSE_PUNCTUATION);
if (strcmp (basename_ptr1, basename_ptr2))
result = FALSE;
else
result = TRUE;
TtaFreeMemory (basename_ptr1);
TtaFreeMemory (basename_ptr2);
return (result);
}
/*----------------------------------------------------------------------
HasKnownFileSuffix
returns TRUE if path points to a file ending with a suffix.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean HasKnownFileSuffix (const char *path)
#else /* __STDC__ */
boolean HasKnownFileSuffix (path)
const char *path;
#endif /* __STDC__ */
{
char *root;
char temppath[MAX_LENGTH];
char suffix[MAX_LENGTH];
if (!path || path[0] == EOS || path[strlen(path)] == DIR_SEP)
return (FALSE);
root = AmayaParseUrl(path, "", AMAYA_PARSE_PATH | AMAYA_PARSE_PUNCTUATION);
if (root)
{
strcpy (temppath, root);
TtaFreeMemory (root);
/* Get the suffix */
ExtractSuffix (temppath, suffix);
if( suffix[0] == EOS)
/* no suffix */
return (FALSE);
/* Normalize the suffix */
ConvertToLowerCase (suffix);
if (!strcmp (suffix, "gz"))
/* skip the compressed suffix */
{
ExtractSuffix (temppath, suffix);
if(suffix[0] == EOS)
/* no suffix */
return (FALSE);
/* Normalize the suffix */
ConvertToLowerCase (suffix);
}
if (strcmp (suffix, "gif") &&
strcmp (suffix, "xbm") &&
strcmp (suffix, "xpm") &&
strcmp (suffix, "jpg") &&
strcmp (suffix, "pdf") &&
strcmp (suffix, "png") &&
strcmp (suffix, "tgz") &&
strcmp (suffix, "xpg") &&
strcmp (suffix, "xpd") &&
strcmp (suffix, "ps") &&
strcmp (suffix, "au") &&
strcmp (suffix, "html") &&
strcmp (suffix, "htm") &&
strcmp (suffix, "shtml") &&
strcmp (suffix, "xht") &&
strcmp (suffix, "xhtm") &&
strcmp (suffix, "xhtml") &&
strcmp (suffix, "txt") &&
strcmp (suffix, "css") &&
strcmp (suffix, "eps"))
return (FALSE);
else
return (TRUE);
}
else
return (FALSE);
}
/*----------------------------------------------------------------------
ChopURL
Gives back a URL no longer than MAX_PRINT_URL_LENGTH chars (outputURL).
If inputURL is bigger than that size, outputURL receives
MAX_PRINT_URL_LENGTH / 2 chars from the beginning of inputURL, "...",
and MAX_PRINT_URL_LENGTH / 2 chars from the end of inputURL.
If inputURL is not longer than MAX_PRINT_URL_LENGTH chars, it gets
copied into outputURL.
N.B.: outputURL must point to a memory block of MAX_PRINT_URL_LENGTH
chars.
----------------------------------------------------------------------*/
#ifdef __STDC__
void ChopURL (char *outputURL, const char *inputURL)
#else
void ChopURL (outputURL, inputURL)
char *outputURL;
const char *inputURL;
#endif
{
int len;
len = strlen (inputURL);
if (len <= MAX_PRINT_URL_LENGTH)
strcpy (outputURL, inputURL);
else
/* make a truncated urlName on the status window */
{
strncpy (outputURL, inputURL, MAX_PRINT_URL_LENGTH / 2);
outputURL [MAX_PRINT_URL_LENGTH / 2] = EOS;
strcat (outputURL, "...");
strcat (outputURL, &(inputURL[len - MAX_PRINT_URL_LENGTH / 2 ]));
}
}
/*----------------------------------------------------------------------
scan
Scan a filename for its constituents
-----------------------------------
On entry,
name points to a document name which may be incomplete.
On exit,
absolute or relative may be nonzero (but not both).
host, fragment and access may be nonzero if they were specified.
Any which are nonzero point to zero terminated strings.
----------------------------------------------------------------------*/
#ifdef __STDC__
static void scan (char * name, HTURI * parts)
#else /* __STDC__ */
static void scan (name, parts)
char *name;
HTURI *parts;
#endif /* __STDC__ */
{
char *p;
char *after_access = name;
memset (parts, '\0', sizeof (HTURI));
/* Look for fragment identifier */
if ((p = strchr(name, '#')) != NULL)
{
*p++ = '\0';
parts->fragment = p;
}
for (p=name; *p; p++)
{
if (*p == URL_SEP || *p == DIR_SEP || *p=='#' || *p=='?')
break;
if (*p==':')
{
*p = 0;
parts->access = after_access; /* Scheme has been specified */
/* The combination of gcc, the "-O" flag and the HP platform is
unhealthy. The following three lines is a quick & dirty fix, but is
not recommended. Rather, turn off "-O". */
/* after_access = p;*/
/* while (*after_access == 0)*/
/* after_access++;*/
after_access = p+1;
if (!strcasecmp("URL", parts->access))
/* Ignore IETF's URL: pre-prefix */
parts->access = NULL;
else
break;
}
}
p = after_access;
if (*p == URL_SEP || *p == DIR_SEP)
{
if (p[1] == URL_SEP)
{
parts->host = p+2; /* host has been specified */
*p = 0; /* Terminate access */
/* look for end of host name if any */
p = strchr (parts->host, URL_SEP);
if (p)
{
*p = EOS; /* Terminate host */
parts->absolute = p+1; /* Root has been found */
}
}
else
/* Root found but no host */
parts->absolute = p+1;
}
else
{
parts->relative = (*after_access) ? after_access : 0; /* zero for "" */
}
}
/*----------------------------------------------------------------------
AmayaParseUrl: parse a Name relative to another name
This returns those parts of a name which are given (and requested)
substituting bits from the related name where necessary.
On entry,
aName A filename given
relatedName A name relative to which aName is to be parsed. Give
it an empty string if aName is absolute.
wanted A mask for the bits which are wanted.
On exit,
returns A pointer to a malloc'd string which MUST BE FREED
----------------------------------------------------------------------*/
#ifdef __STDC__
char *AmayaParseUrl (const char *aName, char *relatedName, int wanted)
#else /* __STDC__ */
char *AmayaParseUrl (aName, relatedName, wanted)
const char *aName;
char *relatedName;
int wanted;
#endif /* __STDC__ */
{
char *return_value;
char result[MAX_LENGTH];
char name[MAX_LENGTH];
char rel[MAX_LENGTH];
char *p, *access;
HTURI given, related;
int len;
char used_sep;
char *used_str;
if (strchr (aName, DIR_SEP) || strchr (relatedName, DIR_SEP))
{
used_str = DIR_STR;
used_sep = DIR_SEP;
}
else
{
used_str = URL_STR;
used_sep = URL_SEP;
}
/* Make working copies of input strings to cut up: */
return_value = NULL;
result[0] = 0; /* Clear string */
strcpy (name, aName);
if (relatedName != NULL)
strcpy (rel, relatedName);
else
relatedName[0] = EOS;
scan (name, &given);
scan (rel, &related);
access = given.access ? given.access : related.access;
if (wanted & AMAYA_PARSE_ACCESS)
if (access)
{
strcat (result, access);
if(wanted & AMAYA_PARSE_PUNCTUATION)
strcat (result, ":");
}
if (given.access && related.access)
/* If different, inherit nothing. */
if (strcmp (given.access, related.access) != 0)
{
related.host = 0;
related.absolute = 0;
related.relative = 0;
related.fragment = 0;
}
if (wanted & AMAYA_PARSE_HOST)
if(given.host || related.host)
{
if(wanted & AMAYA_PARSE_PUNCTUATION)
strcat (result, "//");
strcat (result, given.host ? given.host : related.host);
}
if (given.host && related.host)
/* If different hosts, inherit no path. */
if (strcmp(given.host, related.host) != 0)
{
related.absolute = 0;
related.relative = 0;
related.fragment = 0;
}
if (wanted & AMAYA_PARSE_PATH)
{
if (given.absolute)
{
/* All is given */
if (wanted & AMAYA_PARSE_PUNCTUATION)
strcat (result, used_str);
strcat (result, given.absolute);
}
else if (related.absolute)
{
/* Adopt path not name */
strcat (result, used_str);
strcat (result, related.absolute);
if (given.relative)
{
/* Search part? */
p = strchr (result, '?');
if (!p)
p=result+strlen(result)-1;
for (; *p!=used_sep; p--); /* last / */
/* Remove filename */
p[1]=0;
/* Add given one */
strcat (result, given.relative);
}
}
else if (given.relative)
/* what we've got */
strcat (result, given.relative);
else if (related.relative)
strcat (result, related.relative);
else
/* No inheritance */
strcat (result, used_str);
}
if (wanted & AMAYA_PARSE_ANCHOR)
if (given.fragment || related.fragment)
{
if (given.absolute && given.fragment)
{
/*Fixes for relURLs...*/
if (wanted & AMAYA_PARSE_PUNCTUATION)
strcat (result, "#");
strcat (result, given.fragment);
}
else if (!(given.absolute) && !(given.fragment))
strcat (result, "");
else
{
if (wanted & AMAYA_PARSE_PUNCTUATION)
strcat (result, "#");
strcat (result, given.fragment ? given.fragment : related.fragment);
}
}
len = strlen (result);
if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
strcpy (return_value, result);
return (return_value); /* exactly the right length */
}
/*----------------------------------------------------------------------
HTCanon
Canonicalizes the URL in the following manner starting from the host
pointer:
1) The host name is converted to lowercase
2) Chop off port if `:80' (http), `:70' (gopher), or `:21' (ftp)
Return: OK The position of the current path part of the URL
which might be the old one or a new one.
----------------------------------------------------------------------*/
#ifdef __STDC__
static char *HTCanon (char ** filename, char * host)
#else /* __STDC__ */
static char *HTCanon (filename, host)
char **filename;
char *host;
#endif /* __STDC__ */
{
char *newname = NULL;
char *port;
char *strptr;
char *path;
char *access = host-3;
char used_sep;
if (*filename && strchr (*filename, URL_SEP))
{
used_sep = URL_SEP;
}
else
{
used_sep = DIR_SEP;
}
while (access>*filename && *(access-1)!= used_sep) /* Find access method */
access--;
if ((path = strchr(host, used_sep)) == NULL) /* Find path */
path = host + strlen(host);
if ((strptr = strchr(host, '@')) != NULL && strptr<path) /* UserId */
host = strptr;
if ((port = strchr(host, ':')) != NULL && port>path) /* Port number */
port = NULL;
strptr = host; /* Convert to lower-case */
while (strptr<path)
{
*strptr = tolower(*strptr);
strptr++;
}
/* Does the URL contain a full domain name? This also works for a
numerical host name. The domain name is already made lower-case
and without a trailing dot. */
{
char *dot = port ? port : path;
if (dot > *filename && *--dot=='.')
{
char *orig=dot, *dest=dot+1;
while((*orig++ = *dest++));
if (port) port--;
path--;
}
}
/* Chop off port if `:', `:80' (http), `:70' (gopher), or `:21' (ftp) */
if (port)
{
if (!*(port+1) || *(port+1)==used_sep)
{
if (!newname)
{
char *orig=port, *dest=port+1;
while((*orig++ = *dest++));
}
}
else if ((!strncmp(access, "http", 4) &&
(*(port+1)=='8'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
(!strncmp(access, "gopher", 6) &&
(*(port+1)=='7'&&*(port+2)=='0'&&(*(port+3)==used_sep||!*(port+3)))) ||
(!strncmp(access, "ftp", 3) &&
(*(port+1)=='2'&&*(port+2)=='1'&&(*(port+3)==used_sep||!*(port+3))))) {
if (!newname)
{
char *orig=port, *dest=port+3;
while((*orig++ = *dest++));
/* Update path position, Henry Minsky */
path -= 3;
}
}
else if (newname)
strncat(newname, port, (int) (path-port));
}
if (newname)
{
char *newpath = newname+strlen(newname);
strcat(newname, path);
path = newpath;
/* Free old copy */
TtaFreeMemory(*filename);
*filename = newname;
}
return path;
}
/*----------------------------------------------------------------------
SimplifyUrl: simplify a URI
A URI is allowed to contain the sequence xxx/../ which may be
replaced by "" , and the sequence "/./" which may be replaced by DIR_STR.
Simplification helps us recognize duplicate URIs.
Thus, /etc/junk/../fred becomes /etc/fred
/etc/junk/./fred becomes /etc/junk/fred
but we should NOT change
http://fred.xxx.edu/../..
or ../../albert.html
In order to avoid empty URLs the following URLs become:
/fred/.. becomes /fred/..
/fred/././.. becomes /fred/..
/fred/.././junk/.././ becomes /fred/..
If more than one set of `://' is found (several proxies in cascade) then
only the part after the last `://' is simplified.
Returns: A string which might be the old one or a new one.
----------------------------------------------------------------------*/
#ifdef __STDC__
void SimplifyUrl (char ** url)
#else /* __STDC__ */
void SimplifyUrl (url)
char **url;
#endif /* __STDC__ */
{
char *path, *p;
char *newptr, *access;
char *orig, *dest, *end;
char used_sep;
if (!url || !*url)
return;
if (strchr (*url, URL_SEP))
{
used_sep = URL_SEP;
}
else
{
used_sep = DIR_SEP;
}
/* Find any scheme name */
if ((path = strstr(*url, "://")) != NULL)
{
/* Find host name */
access = *url;
while (access<path && (*access=tolower(*access)))
access++;
path += 3;
while ((newptr = strstr(path, "://")) != NULL)
/* For proxies */
path = newptr+3;
/* We have a host name */
path = HTCanon(url, path);
}
else if ((path = strstr(*url, ":/")) != NULL)
path += 2;
else
path = *url;
if (*path == used_sep && *(path+1)==used_sep)
/* Some URLs start //<foo> */
path += 1;
else if (!strncmp(path, "news:", 5))
{
newptr = strchr(path+5, '@');
if (!newptr)
newptr = path + 5;
while (*newptr)
{
/* Make group or host lower case */
*newptr = tolower (*newptr);
newptr++;
}
/* Doesn't need to do any more */
return;
}
if ((p = path))
{
if (!((end = strchr (path, ';')) || (end = strchr (path, '?')) ||
(end = strchr (path, '#'))))
end = path + strlen (path);
/* Parse string second time to simplify */
p = path;
while (p < end)
{
if (*p==used_sep)
{
if (p > *url && *(p+1) == '.' && (*(p+2) == used_sep || !*(p+2)))
{
orig = p + 1;
dest = (*(p+2)!=used_sep) ? p+2 : p+3;
while ((*orig++ = *dest++)); /* Remove a used_sep and a dot*/
end = orig - 1;
}
else if (*(p+1)=='.' && *(p+2)=='.' && (*(p+3)==used_sep || !*(p+3)))
{
newptr = p;
while (newptr>path && *--newptr!=used_sep); /* prev used_sep */
if (*newptr == used_sep)
orig = newptr + 1;
else
orig = newptr;
dest = (*(p+3) != used_sep) ? p+3 : p+4;
while ((*orig++ = *dest++)); /* Remove /xxx/.. */
end = orig-1;
/* Start again with prev slash */
p = newptr;
}
else if (*(p+1) == used_sep)
{
while (*(p+1) == used_sep)
{
orig = p;
dest = p + 1;
while ((*orig++ = *dest++)); /* Remove multiple /'s */
end = orig-1;
}
}
else
p++;
}
else
p++;
}
}
/*
** Check for host/../.. kind of things
*/
if (*path==used_sep && *(path+1)=='.' && *(path+2)=='.' && (!*(path+3) || *(path+3)==used_sep))
*(path+1) = EOS;
return;
}
/*----------------------------------------------------------------------
NormalizeFile normalizes local names.
Return TRUE if target and src differ.
----------------------------------------------------------------------*/
#ifdef __STDC__
boolean NormalizeFile (char *src, char *target)
#else
boolean NormalizeFile (src, target)
char *src;
char *target;
#endif
{
char *s;
boolean change;
change = FALSE;
if (strncmp (src, "file:", 5) == 0)
{
/* remove the prefix file: */
if (src[5] == EOS)
strcpy (target, DIR_STR);
else if (src[0] == '~')
{
/* replace ~ */
s = (char *) TtaGetEnvString ("HOME");
strcpy (target, s);
strcat (target, &src[5]);
}
else
strcpy (target, &src[5]);
change = TRUE;
}
# ifndef _WINDOWS
else if (src[0] == '~')
{
/* replace ~ */
s = (char *) TtaGetEnvString ("HOME");
strcpy (target, s);
if (src[1] != DIR_SEP)
strcat (target, DIR_STR);
strcat (target, &src[1]);
change = TRUE;
}
# endif /* _WINDOWS */
else
strcpy (target, src);
/* remove /../ and /./ */
SimplifyUrl (&target);
if (!change)
change = strcmp (src, target);
return (change);
}
/*----------------------------------------------------------------------
MakeRelativeURL: make relative name
This function creates and returns a string which gives an expression of
one address as related to another. Where there is no relation, an absolute
address is retured.
On entry,
Both names must be absolute, fully qualified names of nodes
(no fragment bits)
On exit,
The return result points to a newly allocated name which, if
parsed by AmayaParseUrl relative to relatedName, will yield aName.
The caller is responsible for freeing the resulting name later.
----------------------------------------------------------------------*/
#ifdef __STDC__
char *MakeRelativeURL (char *aName, char *relatedName)
#else /* __STDC__ */
char *MakeRelativeURL (aName, relatedName)
char *aName;
char *relatedName;
#endif /* __STDC__ */
{
char *return_value;
char result[MAX_LENGTH];
char *p;
char *q;
char *after_access;
char *last_slash = NULL;
int slashes, levels, len;
# ifdef _WINDOWS
int ndx;
# endif /* _WINDOWS */
if (aName == NULL || relatedName == NULL)
return (NULL);
slashes = 0;
after_access = NULL;
p = aName;
q = relatedName;
for (; *p && (*p == *q); p++, q++)
{
/* Find extent of match */
if (*p == ':')
after_access = p + 1;
if (*p == DIR_SEP)
{
/* memorize the last slash position and count them */
last_slash = p;
slashes++;
}
}
/* q, p point to the first non-matching character or zero */
if (*q == EOS)
{
/* New name is a subset of the related name */
/* exactly the right length */
len = strlen (p);
if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
strcpy (return_value, p);
}
else if ((slashes < 2 && after_access == NULL)
|| (slashes < 3 && after_access != NULL))
{
/* Two names whitout common path */
/* exactly the right length */
len = strlen (aName);
if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
strcpy (return_value, aName);
}
else
{
/* Some path in common */
if (slashes == 3 && strncmp (aName, "http:", 5) == 0)
/* just the same server */
strcpy (result, last_slash);
else
{
levels= 0;
for (; *q && *q != '#' && *q!=';' && *q!='?'; q++)
if (*q == DIR_SEP)
levels++;
result[0] = EOS;
for (;levels; levels--)
strcat (result, "../");
strcat (result, last_slash+1);
}
if (!*result)
strcat (result, "./");
/* exactly the right length */
len = strlen (result);
if ((return_value = (char *) TtaGetMemory (len + 1)) != NULL)
strcpy (return_value, result);
}
# ifdef _WINDOWS
len = strlen (return_value);
for (ndx = 0; ndx < len; ndx ++)
if (return_value[ndx] == '\\')
return_value[ndx] = '/' ;
# endif /* _WINDOWS */
return (return_value);
}
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