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/* Distributed Checksum Clearinghouse
*
* Copyright (c) 2005 by Rhyolite Software
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE
* BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Rhyolite Software DCC 1.2.74-1.15 $Revision$
*/
#include "dcc_defs.h"
#ifdef DCC_WIN32
#include <direct.h>
#endif
DCC_PATH dcc_homedir;
DCC_PATH dcc_path_buf;
/* make an obvious pathname from a file name for printing */
const char *
dcc_fnm2path(DCC_PATH path, const char *nm)
{
#ifdef DCC_WIN32
char *p;
DWORD lasterror;
#else
int dir_len, j;
const char *dir, *p;
#endif
/* the answer is the input pathname if it is null or absolute */
if (!nm)
return "(null)";
if (*nm == '\0')
return "";
if (dcc_homedir[0] == '\0') {
STRLIMCPY(path, sizeof(DCC_PATH), nm);
return path;
}
#ifdef DCC_WIN32
lasterror = GetLastError();
GetFullPathName(nm, sizeof(DCC_PATH), path, &p);
SetLastError(lasterror);
#else
if (nm[0] == '/') {
STRLIMCPY(path, sizeof(DCC_PATH), nm);
return path;
}
/* trim trailing slash from input file or pathname */
dir = dcc_homedir;
dir_len = strlen(dir);
while (dir_len > 1 && dir[dir_len-1] == '/')
--dir_len;
/* remove extra "../" and "./" */
for (;;) {
if (dir_len == 0
|| (dir_len == 1 && dir[0] == '.'
&& strcmp(nm, ".")
&& strcmp(nm, "..")
&& !strchr(nm, '/'))) {
STRLIMCPY(path, sizeof(DCC_PATH), nm);
return path;
}
if (!strncmp(nm, "./", 2)
|| !strcmp(nm, ".")) {
if (*++nm != '\0')
++nm;
} else if (!strncmp(nm, "../", 3)
|| !strcmp(nm, "..")) {
p = strrchr(dir, '/');
if (!p || p >= &dir[dir_len]) {
if (!strncmp(dir, "..", dir_len))
break;
p = dir;
}
j = p-dir;
if (!strncmp(p, "/..", dir_len-j))
break;
dir_len = j;
nm += 2;
if (*nm != '\0')
++nm;
} else {
break;
}
if (*nm == '\0') {
if (dir_len == 0) {
dir = ".";
dir_len = 1;
}
snprintf(path, sizeof(DCC_PATH), "%.*s", dir_len, dir);
return path;
}
}
snprintf(path, sizeof(DCC_PATH), "%.*s/%s", dir_len, dir, nm);
#endif
return path;
}
/* change to the DCC home directory */
u_char /* 0=failed 1=ok */
dcc_cdhome(DCC_EMSG emsg, const char *newdir)
{
if (!newdir)
newdir = DCC_HOMEDIR;
if (*newdir == '\0') {
dcc_pemsg(EX_NOINPUT, emsg,
"invalid null DCC home directory");
return 0;
}
if (strlen(newdir) >= ISZ(dcc_homedir)) {
dcc_pemsg(EX_NOINPUT, emsg,
"DCC home directory \"%s\" too long", newdir);
return 0;
}
#ifdef DCC_WIN32
if (!SetCurrentDirectory(newdir)) {
dcc_pemsg(EX_NOINPUT, emsg, "SetCurrentDirectory(%s): %s" ,
DCC_NM2PATH(newdir), ERROR_STR());
return 0;
}
if (!getcwd(dcc_homedir, sizeof(dcc_homedir)))
BUFCPY(dcc_homedir, DCC_NM2PATH(newdir));
#else
if (0 > chdir(newdir)) {
dcc_pemsg(EX_NOINPUT, emsg, "chdir(%s): %s",
DCC_NM2PATH(newdir), ERROR_STR());
return 0;
}
if (*newdir == '/'
|| !getcwd(dcc_homedir, sizeof(dcc_homedir)))
BUFCPY(dcc_homedir, DCC_NM2PATH(newdir));
#endif
return 1;
}
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